Question

produtos notaveis (2a+3b)²

Answer 1

(2a+3b)²
= (2a+3b).(2a+3b)
=4a²+6ab+6ba+9b²
=4a²+12ab+9b²

Answer 2

(2a)^2 + 2 * 2a * 3b + (3b)^2

4a^2 + 9b^2 + 12ab