Question

(2a+3b)² = 4a²+ ............. + 9b². Find the middle term

Answer 1

Step-by-step explanation:

12ab is the answer...........

Answer 2

$\huge\fbox\red{\fbox\blue{Done \: by \: Aritra \: Kar}}$

Step-by-step explanation:

$\fbox\red{\fbox\blue{ formula - }}$

$= > {(a + b)}^{2} = {a }^{2} + 2ab + {b}^{2}$

$So, {(2a + 3b)}^{2} \\ = > {(2a)}^{2} + 2 \times 2a \times 3b + {(3b)}^{2} \\ = > {4a}^{2} + 12ab + {3b}^{2} \\ = > 12ab(ans)$