Question

1. how to solve this(a + b)3​

Answer 1

Rearrange it to 3(a+b) then your answer would be 3a+3b

Answer 2

Hey there!☺

$Answer:\boxed{3a+3b}$

$Explanation:$

$(a+b)3$

Add parenthesis.

$(a)(3)+(b)(3)\\3a+3b$

3a+3b is your answer.

Hope this helps!☺