Question

(a+b)² + 2(a+b) calculem ae pfv

Answer 1

Explicação passo-a-passo:

(a+b)² + 2(a+b)=

a²+2ab+b² + 2(a+b)=

a²+2ab+b² + 2a+2b=

a²+b²+2ab+2a+2b=

a²+b²+2(ab+a+b)