Question

Factorise
(a+b) ² - la-bl²​

Answer 1

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$(a+b)^2-4ab=a^2+b^2+2ab-4ab(a+b \\(a+b)^2-4ab=a^2+b^2-2ab(a+b) \\ (a+b)^2-4ab=(a-b)(a-b) \\ (a+b) {}^{2} −4ab=(a−b)(a−b) \\ \purple{(a+b)^2-4ab=(a-b)(a-b)}$

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