Question

expand 2 into a upon 2 + b upon 3​

Answer 1

Answer:

I can't understand your point

Answer 2

use the identity (a+b)² = a² + b² + 2ab

$( \frac{a}{2} ) ^{2} + ( { \frac{b}{3} })^{2} + 2 \times \frac{a}{2} \times \frac{b}{3}$

$\frac{a^{2} }{4} + \frac{ {b}^{2} }{9} + \frac{b}{3} a$