Question

(ab + ba)(aa + bb) – (2a/2 + 2b/2)

Answer 1

Explicación paso a paso:

$(ab + ba)(aa + bb) - ( \frac{2a}{2} + \frac{2b}{2}) \\ = ({a}^{3} b + a {b}^{ 3} + b{a}^{3} + {b}^{3} a) - (a + b) \\ = (2{a}^{3} b + 2a {b}^{ 3} ) - (a + b) \\ = 2{a}^{3} b + 2a {b}^{ 3} - a - b$