Question

$4a {}^{2} + 12ab + 9b {}^{2}$

Answer 1

a2 ± 2ab + b2 = (a ± b)2 a2 - b2 = (a - b )(a + b) ~~~~~~~~ 4a2 + 12ab + 9b2 - 25c2 = [(2a)2 + 2 · 2 · 3ab + (3b)2] - (5c) 2 = = (2a + 3b)2 - (5c)2 = (2a ...

Answer 2

(2a+3b) 2-(5c) 2 = (2a)