Question

(5a-3b)² - (5a-3b) factorise it. Who can do this sum is a genius.........

Answer 1

$(5a - 3b) {}^{2} - (5a - 3b) \\ (5a - 3b)((5a - 3b) - 1) \\ = (5a - 3b)(5a - 3b - 1)$

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