Question

plz help

plz solve 2nd question of expand

Answer 1

HELLO DEAR,

NOW WE KNOW THE FORMULA OF



(a + b)²= a²+b²+ 2ab


here ,, a=a/2. and b= b/3


now put this value in the formula


we get,
$( \frac{a}{2})^{2} + ( \frac{b}{3} )^{2} + 2 \times \frac{a}{2} \times \frac{b}{3} \\ = > \frac{ {a}^{2} }{ {4} } + \frac{ {b}^{2} }{9} + \frac{ab}{3} \\ = > \frac{9 {a^{2} + 4 {b}^{2} } }{36} + \frac{ab}{3} \\ = > \frac{27 {a}^{2} + 12 {b}^{2} + 36ab }{108} \\ = > 3( \frac{9 {a}^{2} + 4 {b}^{2} + 12ab }{108} ) \\ = > ( \frac{9 {a}^{2} + 4 {b}^{2} + 12ab}{36} ) \\ = > i \: hope \: its \: help \: you \: \\ thanks$