Question

Factorise
(i) a2 - (b-c)2​

Answer 1

Answer:

${a}^{2} - (b - c) ^{2} \\ \\ = {a}^{2} - ( {b}^{2} - 2bc + {c}^{2} ) \\ \\ = {a}^{2} - {b}^{2} + 2bc - {c}^{2} \\ \\ = {a}^{2} - {b}^{2} - {c}^{2} + 2bc$

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Answer 2

Answer:

(a+b-c) (a-b+c)

Step-by-step explanation:

IT is in di formula of a²-b²

take (b-c)² as y and a² as x

so we find that it is in di a² -b² formula

hence ,we break it as per the formula