Question

a^2 - (2a + 3b)^2 factoriese​

Answer 1

${(2a + 3b)}^{2}$

Using Identity, (a+b)^2 = a^2 + 2ab + b^2

=

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

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

$= - {5a}^{2} + 12ab + {9b}^{2}$