Solve x^3left(x+4right)^2left(x-1right)left(x-2right)

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

Evaluate

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

Solution Steps

Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(x+4\right)^{2}.

$$x^{3}\left(x^{2}+8x+16\right)\left(x-1\right)\left(x-2\right)$$

Use the distributive property to multiply x^{3} by x^{2}+8x+16.

$$\left(x^{5}+8x^{4}+16x^{3}\right)\left(x-1\right)\left(x-2\right)$$

Use the distributive property to multiply x^{5}+8x^{4}+16x^{3} by x-1 and combine like terms.

$$\left(x^{6}+7x^{5}+8x^{4}-16x^{3}\right)\left(x-2\right)$$

Use the distributive property to multiply x^{6}+7x^{5}+8x^{4}-16x^{3} by x-2 and combine like terms.

$$x^{7}+5x^{6}-6x^{5}-32x^{4}+32x^{3}$$

Expand

$$x^{7}+5x^{6}-6x^{5}-32x^{4}+32x^{3}$$

Solution Steps

Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(x+4\right)^{2}.

$$x^{3}\left(x^{2}+8x+16\right)\left(x-1\right)\left(x-2\right)$$

Use the distributive property to multiply x^{3} by x^{2}+8x+16.

$$\left(x^{5}+8x^{4}+16x^{3}\right)\left(x-1\right)\left(x-2\right)$$

Use the distributive property to multiply x^{5}+8x^{4}+16x^{3} by x-1 and combine like terms.

$$\left(x^{6}+7x^{5}+8x^{4}-16x^{3}\right)\left(x-2\right)$$

Use the distributive property to multiply x^{6}+7x^{5}+8x^{4}-16x^{3} by x-2 and combine like terms.

$$x^{7}+5x^{6}-6x^{5}-32x^{4}+32x^{3}$$