Question

49x^2-(a+b)^2 factorise

Answer 1

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$49 {x}^{2} - (a + b) {}^{2} \\ = (7x) {}^{2} - (a + b) {}^{2} \\ = using \: identity \: {a}^{2} - {b}^{2} = (a + b)(a - b) \\ = 7x + (a + b)7x - (a + b)$

Answer 2

Answer:

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