Solve [(x-1/2y)^{3}+3/2xy*(x-1/2y)]*(1/8y^{3}+x^3)-(-frac{1}{4}y^2)^3-x^6

$$[ ( x - \frac { 1 } { 2 } y ) ^ { 3 } + \frac { 3 } { 2 } x y \cdot ( x - \frac { 1 } { 2 } y ) ] \cdot ( \frac { 1 } { 8 } y ^ { 3 } + x ^ { 3 } ) - ( - \frac { 1 } { 4 } y ^ { 2 } ) ^ { 3 } - x ^ { 6 }$$

Evaluate

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Solution Steps

Use binomial theorem \left(a-b\right)^{3}=a^{3}-3a^{2}b+3ab^{2}-b^{3} to expand \left(x-\frac{1}{2}y\right)^{3}.

$$\left(x^{3}-\frac{3}{2}x^{2}y+\frac{3}{4}xy^{2}-\frac{1}{8}y^{3}+\frac{3}{2}xy\left(x-\frac{1}{2}y\right)\right)\left(\frac{1}{8}y^{3}+x^{3}\right)-\left(-\frac{1}{4}y^{2}\right)^{3}-x^{6}$$

Use the distributive property to multiply \frac{3}{2}xy by x-\frac{1}{2}y.

$$\left(x^{3}-\frac{3}{2}x^{2}y+\frac{3}{4}xy^{2}-\frac{1}{8}y^{3}+\frac{3}{2}yx^{2}-\frac{3}{4}xy^{2}\right)\left(\frac{1}{8}y^{3}+x^{3}\right)-\left(-\frac{1}{4}y^{2}\right)^{3}-x^{6}$$

Combine -\frac{3}{2}x^{2}y and \frac{3}{2}yx^{2} to get 0.

$$\left(x^{3}+\frac{3}{4}xy^{2}-\frac{1}{8}y^{3}-\frac{3}{4}xy^{2}\right)\left(\frac{1}{8}y^{3}+x^{3}\right)-\left(-\frac{1}{4}y^{2}\right)^{3}-x^{6}$$

Combine \frac{3}{4}xy^{2} and -\frac{3}{4}xy^{2} to get 0.

$$\left(x^{3}-\frac{1}{8}y^{3}\right)\left(\frac{1}{8}y^{3}+x^{3}\right)-\left(-\frac{1}{4}y^{2}\right)^{3}-x^{6}$$

Consider \left(x^{3}-\frac{1}{8}y^{3}\right)\left(\frac{1}{8}y^{3}+x^{3}\right). Multiplication can be transformed into difference of squares using the rule: \left(a-b\right)\left(a+b\right)=a^{2}-b^{2}.

$$\left(x^{3}\right)^{2}-\left(\frac{1}{8}y^{3}\right)^{2}-\left(-\frac{1}{4}y^{2}\right)^{3}-x^{6}$$

To raise a power to another power, multiply the exponents. Multiply 3 and 2 to get 6.

$$x^{6}-\left(\frac{1}{8}y^{3}\right)^{2}-\left(-\frac{1}{4}y^{2}\right)^{3}-x^{6}$$

Expand \left(\frac{1}{8}y^{3}\right)^{2}.

$$x^{6}-\left(\frac{1}{8}\right)^{2}\left(y^{3}\right)^{2}-\left(-\frac{1}{4}y^{2}\right)^{3}-x^{6}$$

To raise a power to another power, multiply the exponents. Multiply 3 and 2 to get 6.

$$x^{6}-\left(\frac{1}{8}\right)^{2}y^{6}-\left(-\frac{1}{4}y^{2}\right)^{3}-x^{6}$$

Calculate \frac{1}{8} to the power of 2 and get \frac{1}{64}.

$$x^{6}-\frac{1}{64}y^{6}-\left(-\frac{1}{4}y^{2}\right)^{3}-x^{6}$$

Expand \left(-\frac{1}{4}y^{2}\right)^{3}.

$$x^{6}-\frac{1}{64}y^{6}-\left(-\frac{1}{4}\right)^{3}\left(y^{2}\right)^{3}-x^{6}$$

To raise a power to another power, multiply the exponents. Multiply 2 and 3 to get 6.

$$x^{6}-\frac{1}{64}y^{6}-\left(-\frac{1}{4}\right)^{3}y^{6}-x^{6}$$

Calculate -\frac{1}{4} to the power of 3 and get -\frac{1}{64}.

$$x^{6}-\frac{1}{64}y^{6}-\left(-\frac{1}{64}y^{6}\right)-x^{6}$$

The opposite of -\frac{1}{64}y^{6} is \frac{1}{64}y^{6}.

$$x^{6}-\frac{1}{64}y^{6}+\frac{1}{64}y^{6}-x^{6}$$

Combine -\frac{1}{64}y^{6} and \frac{1}{64}y^{6} to get 0.

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

Combine x^{6} and -x^{6} to get 0.

$$0$$

Factor

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Solution Steps

Factor out \frac{1}{64}.

$$\frac{\left(\left(2x-y\right)^{3}+6xy\left(2x-y\right)\right)\left(y^{3}+8x^{3}\right)+y^{6}-64x^{6}}{64}$$

Simplify.

$$0$$