Question

(2a−3b) 2 =
thanks .​

Answer 1

$= (2a - 3b) {}^{2}$

$= (2a) {}^{2} - 2 \: . \: 2a \: . \: 3b + (3b) {}^{2}$

$\boxed{ = 4a {}^{2} - 12ab + 9b {}^{2} }$

Att. YRZ