What is expand-(a+b)3-8(a-b)^3 ?

The solution to expand-(a+b)3-8(a-b)^3 is -3a-3b-8a^3+24a^2b-24ab^2+8b^3

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expand-(a+b)3-8(a-b)^3

expand

- (a + b) 3 - 8 (a - b)^{3}

- 3 a - 3 b - 8 a^{3} + 24 a^{2} b - 24 a b^{2} + 8 b^{3}

Solution steps

- (a + b) \cdot 3 - 8 (a - b)^{3}

= - 3 (a + b) - 8 (a - b)^{3}

Expand

- 3 (a + b) : - 3 a - 3 b

= - 3 a - 3 b - 8 (a - b)^{3}

Expand

- 8 (a - b)^{3} : - 8 a^{3} + 24 a^{2} b - 24 a b^{2} + 8 b^{3}

= - 3 a - 3 b - 8 a^{3} + 24 a^{2} b - 24 a b^{2} + 8 b^{3}

7 a - 8 b - 9 a + 2 b

\frac{n !}{( 2 n ! )}

- 3 x - 3 y

\frac{( x - y ) ^{3}}{( y - x ) ^{5}}

(3 x + 3 y)^{3}

What is expand-(a+b)3-8(a-b)^3 ?
The solution to expand-(a+b)3-8(a-b)^3 is -3a-3b-8a^3+24a^2b-24ab^2+8b^3