Solve (x^2+1)(x^2-sqrt{3}x+1)(x^2+sqrt{3}x+1)

$$( x ^ { 2 } + 1 ) ( x ^ { 2 } - \sqrt { 3 } x + 1 ) ( x ^ { 2 } + \sqrt { 3 } x + 1 )$$

Evaluate

$$x^{6}+1$$

Solution Steps

Use the distributive property to multiply x^{2}+1 by x^{2}-\sqrt{3}x+1.

$$\left(x^{2}\left(x^{2}-\sqrt{3}x\right)+x^{2}+x^{2}-\sqrt{3}x+1\right)\left(x^{2}+\sqrt{3}x+1\right)$$

Use the distributive property to multiply x^{2}\left(x^{2}-\sqrt{3}x\right)+x^{2}+x^{2}-\sqrt{3}x+1 by x^{2}+\sqrt{3}x+1 and combine like terms.

$$\left(x^{2}-\sqrt{3}x\right)x^{4}+\left(x^{2}-\sqrt{3}x\right)\sqrt{3}x^{3}+2x^{2}\left(x^{2}-\sqrt{3}x\right)+x^{4}+\sqrt{3}x^{3}+2x^{2}+\left(x^{2}-\sqrt{3}x\right)\sqrt{3}x+x^{2}-\sqrt{3}x+\sqrt{3}x+1$$

Use the distributive property to multiply x^{2}-\sqrt{3}x by x^{4}.

$$x^{6}-\sqrt{3}x^{5}+\left(x^{2}-\sqrt{3}x\right)\sqrt{3}x^{3}+2x^{2}\left(x^{2}-\sqrt{3}x\right)+x^{4}+\sqrt{3}x^{3}+2x^{2}+\left(x^{2}-\sqrt{3}x\right)\sqrt{3}x+x^{2}-\sqrt{3}x+\sqrt{3}x+1$$

Use the distributive property to multiply x^{2}-\sqrt{3}x by \sqrt{3}.

$$x^{6}-\sqrt{3}x^{5}+\left(x^{2}\sqrt{3}-x\left(\sqrt{3}\right)^{2}\right)x^{3}+2x^{2}\left(x^{2}-\sqrt{3}x\right)+x^{4}+\sqrt{3}x^{3}+2x^{2}+\left(x^{2}-\sqrt{3}x\right)\sqrt{3}x+x^{2}-\sqrt{3}x+\sqrt{3}x+1$$

The square of \sqrt{3} is 3.

$$x^{6}-\sqrt{3}x^{5}+\left(x^{2}\sqrt{3}-x\times 3\right)x^{3}+2x^{2}\left(x^{2}-\sqrt{3}x\right)+x^{4}+\sqrt{3}x^{3}+2x^{2}+\left(x^{2}-\sqrt{3}x\right)\sqrt{3}x+x^{2}-\sqrt{3}x+\sqrt{3}x+1$$

Multiply -1 and 3 to get -3.

$$x^{6}-\sqrt{3}x^{5}+\left(x^{2}\sqrt{3}-3x\right)x^{3}+2x^{2}\left(x^{2}-\sqrt{3}x\right)+x^{4}+\sqrt{3}x^{3}+2x^{2}+\left(x^{2}-\sqrt{3}x\right)\sqrt{3}x+x^{2}-\sqrt{3}x+\sqrt{3}x+1$$

Use the distributive property to multiply x^{2}\sqrt{3}-3x by x^{3}.

$$x^{6}-\sqrt{3}x^{5}+\sqrt{3}x^{5}-3x^{4}+2x^{2}\left(x^{2}-\sqrt{3}x\right)+x^{4}+\sqrt{3}x^{3}+2x^{2}+\left(x^{2}-\sqrt{3}x\right)\sqrt{3}x+x^{2}-\sqrt{3}x+\sqrt{3}x+1$$

Combine -\sqrt{3}x^{5} and \sqrt{3}x^{5} to get 0.

$$x^{6}-3x^{4}+2x^{2}\left(x^{2}-\sqrt{3}x\right)+x^{4}+\sqrt{3}x^{3}+2x^{2}+\left(x^{2}-\sqrt{3}x\right)\sqrt{3}x+x^{2}-\sqrt{3}x+\sqrt{3}x+1$$

Use the distributive property to multiply 2x^{2} by x^{2}-\sqrt{3}x.

$$x^{6}-3x^{4}+2x^{4}-2\sqrt{3}x^{3}+x^{4}+\sqrt{3}x^{3}+2x^{2}+\left(x^{2}-\sqrt{3}x\right)\sqrt{3}x+x^{2}-\sqrt{3}x+\sqrt{3}x+1$$

Combine -3x^{4} and 2x^{4} to get -x^{4}.

$$x^{6}-x^{4}-2\sqrt{3}x^{3}+x^{4}+\sqrt{3}x^{3}+2x^{2}+\left(x^{2}-\sqrt{3}x\right)\sqrt{3}x+x^{2}-\sqrt{3}x+\sqrt{3}x+1$$

Combine -x^{4} and x^{4} to get 0.

$$x^{6}-2\sqrt{3}x^{3}+\sqrt{3}x^{3}+2x^{2}+\left(x^{2}-\sqrt{3}x\right)\sqrt{3}x+x^{2}-\sqrt{3}x+\sqrt{3}x+1$$

Combine -2\sqrt{3}x^{3} and \sqrt{3}x^{3} to get -\sqrt{3}x^{3}.

$$x^{6}-\sqrt{3}x^{3}+2x^{2}+\left(x^{2}-\sqrt{3}x\right)\sqrt{3}x+x^{2}-\sqrt{3}x+\sqrt{3}x+1$$

Use the distributive property to multiply x^{2}-\sqrt{3}x by \sqrt{3}.

$$x^{6}-\sqrt{3}x^{3}+2x^{2}+\left(x^{2}\sqrt{3}-x\left(\sqrt{3}\right)^{2}\right)x+x^{2}-\sqrt{3}x+\sqrt{3}x+1$$

The square of \sqrt{3} is 3.

$$x^{6}-\sqrt{3}x^{3}+2x^{2}+\left(x^{2}\sqrt{3}-x\times 3\right)x+x^{2}-\sqrt{3}x+\sqrt{3}x+1$$

Multiply -1 and 3 to get -3.

$$x^{6}-\sqrt{3}x^{3}+2x^{2}+\left(x^{2}\sqrt{3}-3x\right)x+x^{2}-\sqrt{3}x+\sqrt{3}x+1$$

Use the distributive property to multiply x^{2}\sqrt{3}-3x by x.

$$x^{6}-\sqrt{3}x^{3}+2x^{2}+\sqrt{3}x^{3}-3x^{2}+x^{2}-\sqrt{3}x+\sqrt{3}x+1$$

Combine -\sqrt{3}x^{3} and \sqrt{3}x^{3} to get 0.

$$x^{6}+2x^{2}-3x^{2}+x^{2}-\sqrt{3}x+\sqrt{3}x+1$$

Combine 2x^{2} and -3x^{2} to get -x^{2}.

$$x^{6}-x^{2}+x^{2}-\sqrt{3}x+\sqrt{3}x+1$$

Combine -x^{2} and x^{2} to get 0.

$$x^{6}-\sqrt{3}x+\sqrt{3}x+1$$

Combine -\sqrt{3}x and \sqrt{3}x to get 0.

$$x^{6}+1$$

Differentiate w.r.t. x

$$6x^{5}$$

Steps Using Derivative Rule for Sum

Use the distributive property to multiply x^{2}+1 by x^{2}-\sqrt{3}x+1.

$$\frac{\mathrm{d}}{\mathrm{d}x}(\left(x^{2}\left(x^{2}-\sqrt{3}x\right)+x^{2}+x^{2}-\sqrt{3}x+1\right)\left(x^{2}+\sqrt{3}x+1\right))$$

Use the distributive property to multiply x^{2}\left(x^{2}-\sqrt{3}x\right)+x^{2}+x^{2}-\sqrt{3}x+1 by x^{2}+\sqrt{3}x+1 and combine like terms.

$$\frac{\mathrm{d}}{\mathrm{d}x}(\left(x^{2}-\sqrt{3}x\right)x^{4}+\left(x^{2}-\sqrt{3}x\right)\sqrt{3}x^{3}+2x^{2}\left(x^{2}-\sqrt{3}x\right)+x^{4}+\sqrt{3}x^{3}+2x^{2}+\left(x^{2}-\sqrt{3}x\right)\sqrt{3}x+x^{2}-\sqrt{3}x+\sqrt{3}x+1)$$

Use the distributive property to multiply x^{2}-\sqrt{3}x by x^{4}.

$$\frac{\mathrm{d}}{\mathrm{d}x}(x^{6}-\sqrt{3}x^{5}+\left(x^{2}-\sqrt{3}x\right)\sqrt{3}x^{3}+2x^{2}\left(x^{2}-\sqrt{3}x\right)+x^{4}+\sqrt{3}x^{3}+2x^{2}+\left(x^{2}-\sqrt{3}x\right)\sqrt{3}x+x^{2}-\sqrt{3}x+\sqrt{3}x+1)$$

Use the distributive property to multiply x^{2}-\sqrt{3}x by \sqrt{3}.

$$\frac{\mathrm{d}}{\mathrm{d}x}(x^{6}-\sqrt{3}x^{5}+\left(x^{2}\sqrt{3}-x\left(\sqrt{3}\right)^{2}\right)x^{3}+2x^{2}\left(x^{2}-\sqrt{3}x\right)+x^{4}+\sqrt{3}x^{3}+2x^{2}+\left(x^{2}-\sqrt{3}x\right)\sqrt{3}x+x^{2}-\sqrt{3}x+\sqrt{3}x+1)$$

The square of \sqrt{3} is 3.

$$\frac{\mathrm{d}}{\mathrm{d}x}(x^{6}-\sqrt{3}x^{5}+\left(x^{2}\sqrt{3}-x\times 3\right)x^{3}+2x^{2}\left(x^{2}-\sqrt{3}x\right)+x^{4}+\sqrt{3}x^{3}+2x^{2}+\left(x^{2}-\sqrt{3}x\right)\sqrt{3}x+x^{2}-\sqrt{3}x+\sqrt{3}x+1)$$

Multiply -1 and 3 to get -3.

$$\frac{\mathrm{d}}{\mathrm{d}x}(x^{6}-\sqrt{3}x^{5}+\left(x^{2}\sqrt{3}-3x\right)x^{3}+2x^{2}\left(x^{2}-\sqrt{3}x\right)+x^{4}+\sqrt{3}x^{3}+2x^{2}+\left(x^{2}-\sqrt{3}x\right)\sqrt{3}x+x^{2}-\sqrt{3}x+\sqrt{3}x+1)$$

Use the distributive property to multiply x^{2}\sqrt{3}-3x by x^{3}.

$$\frac{\mathrm{d}}{\mathrm{d}x}(x^{6}-\sqrt{3}x^{5}+\sqrt{3}x^{5}-3x^{4}+2x^{2}\left(x^{2}-\sqrt{3}x\right)+x^{4}+\sqrt{3}x^{3}+2x^{2}+\left(x^{2}-\sqrt{3}x\right)\sqrt{3}x+x^{2}-\sqrt{3}x+\sqrt{3}x+1)$$

Combine -\sqrt{3}x^{5} and \sqrt{3}x^{5} to get 0.

$$\frac{\mathrm{d}}{\mathrm{d}x}(x^{6}-3x^{4}+2x^{2}\left(x^{2}-\sqrt{3}x\right)+x^{4}+\sqrt{3}x^{3}+2x^{2}+\left(x^{2}-\sqrt{3}x\right)\sqrt{3}x+x^{2}-\sqrt{3}x+\sqrt{3}x+1)$$

Use the distributive property to multiply 2x^{2} by x^{2}-\sqrt{3}x.

$$\frac{\mathrm{d}}{\mathrm{d}x}(x^{6}-3x^{4}+2x^{4}-2\sqrt{3}x^{3}+x^{4}+\sqrt{3}x^{3}+2x^{2}+\left(x^{2}-\sqrt{3}x\right)\sqrt{3}x+x^{2}-\sqrt{3}x+\sqrt{3}x+1)$$

Combine -3x^{4} and 2x^{4} to get -x^{4}.

$$\frac{\mathrm{d}}{\mathrm{d}x}(x^{6}-x^{4}-2\sqrt{3}x^{3}+x^{4}+\sqrt{3}x^{3}+2x^{2}+\left(x^{2}-\sqrt{3}x\right)\sqrt{3}x+x^{2}-\sqrt{3}x+\sqrt{3}x+1)$$

Combine -x^{4} and x^{4} to get 0.

$$\frac{\mathrm{d}}{\mathrm{d}x}(x^{6}-2\sqrt{3}x^{3}+\sqrt{3}x^{3}+2x^{2}+\left(x^{2}-\sqrt{3}x\right)\sqrt{3}x+x^{2}-\sqrt{3}x+\sqrt{3}x+1)$$

Combine -2\sqrt{3}x^{3} and \sqrt{3}x^{3} to get -\sqrt{3}x^{3}.

$$\frac{\mathrm{d}}{\mathrm{d}x}(x^{6}-\sqrt{3}x^{3}+2x^{2}+\left(x^{2}-\sqrt{3}x\right)\sqrt{3}x+x^{2}-\sqrt{3}x+\sqrt{3}x+1)$$

Use the distributive property to multiply x^{2}-\sqrt{3}x by \sqrt{3}.

$$\frac{\mathrm{d}}{\mathrm{d}x}(x^{6}-\sqrt{3}x^{3}+2x^{2}+\left(x^{2}\sqrt{3}-x\left(\sqrt{3}\right)^{2}\right)x+x^{2}-\sqrt{3}x+\sqrt{3}x+1)$$

The square of \sqrt{3} is 3.

$$\frac{\mathrm{d}}{\mathrm{d}x}(x^{6}-\sqrt{3}x^{3}+2x^{2}+\left(x^{2}\sqrt{3}-x\times 3\right)x+x^{2}-\sqrt{3}x+\sqrt{3}x+1)$$

Multiply -1 and 3 to get -3.

$$\frac{\mathrm{d}}{\mathrm{d}x}(x^{6}-\sqrt{3}x^{3}+2x^{2}+\left(x^{2}\sqrt{3}-3x\right)x+x^{2}-\sqrt{3}x+\sqrt{3}x+1)$$

Use the distributive property to multiply x^{2}\sqrt{3}-3x by x.

$$\frac{\mathrm{d}}{\mathrm{d}x}(x^{6}-\sqrt{3}x^{3}+2x^{2}+\sqrt{3}x^{3}-3x^{2}+x^{2}-\sqrt{3}x+\sqrt{3}x+1)$$

Combine -\sqrt{3}x^{3} and \sqrt{3}x^{3} to get 0.

$$\frac{\mathrm{d}}{\mathrm{d}x}(x^{6}+2x^{2}-3x^{2}+x^{2}-\sqrt{3}x+\sqrt{3}x+1)$$

Combine 2x^{2} and -3x^{2} to get -x^{2}.

$$\frac{\mathrm{d}}{\mathrm{d}x}(x^{6}-x^{2}+x^{2}-\sqrt{3}x+\sqrt{3}x+1)$$

Combine -x^{2} and x^{2} to get 0.

$$\frac{\mathrm{d}}{\mathrm{d}x}(x^{6}-\sqrt{3}x+\sqrt{3}x+1)$$

Combine -\sqrt{3}x and \sqrt{3}x to get 0.

$$\frac{\mathrm{d}}{\mathrm{d}x}(x^{6}+1)$$

The derivative of a polynomial is the sum of the derivatives of its terms. The derivative of a constant term is 0. The derivative of ax^{n} is nax^{n-1}.

$$6x^{6-1}$$

Subtract 1 from 6.

$$6x^{5}$$