Question

Evaluate:- (i) (a+2b)^2
(ii) (2a-3b)^2​

Answer 1

Step-by-step explanation:

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Answer 2

$\huge \color{magenta}\fcolorbox{aqua}{aqua} {\underline {\underline{\cal{S\sf olution}}}}$

$\sf(i) \: (a + 2b)^{2} = {a}^{2} + {ab}^{2} + 2a.2b \\ \\ \rightarrow \sf {a}^{2} + 4 {b}^{2} + 4a {b}^{2}$

$\sf(ii) \: (2a - 3b) ^{2} = {2a}^{2} + {3b}^{2} - 2(2a.3b) \\ \\ \rightarrow \sf {4a}^{2} + 9 {b}^{2} - 12ab$

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