Question

2a(8a+b)-b.(2a+b)??​

Answer 1

2a(8a+b)-b(2a+b)

16a*(2)(+2ab-2ab)-b*(2)

16*(2)-b*(2)

Answer 2

Multiplicando

[2a.8a+2a.b]+[-b.2a+(-b.b)]

16a^2+2ab-2ab-b^2

Simplificando

(4a+1/2b).(4a-1/2b)