Question

2a(a-b)+2b(a+b)?
3p(8c+1)-8c(3p-5)?​

Answer 1

Ответ:

$2a(a - b) + 2b(a + b) = \\ 2 {a}^{2} - 2ab + 2ab + 2 {b}^{2} = 2 {a}^{2} + 2 {b}^{2}$

$3p(8c + 1) - 8c(3p - 5) = \\ 24pc + 3p - 24pc + 40c = \\ 3p + 40c$