Question

expand the following by using identity(a - 2b - 3c)?​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

$\Large\mathtt{\fcolorbox{lime}{black}{\red{Answer}}} \\ \\ using \: identity \: {(a - b)}^{2} = {a}^{2} - 2ab + {b}^{2} \\ (a - 2b - 3c) \\ = {(a)}^{2} - 2(a)(3c) + {(3c)}^{2} \\ = {(a - 3c)}^{2} \\ = (a - 3c)(a - 3c)$