Question

factorise : a square - (b - c )square​

Answer 1

a² - (b-c)²

Using identity a² - b² = (a+b)(a-b) [Where a= a and b = (b-c)]

Therefore

a²-(b-c)²

{a-(b-c)}{a+(b-c)}

= {a-b+c}{a+b-c}

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Answer 2

Answer:

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

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