Math, asked by neetu5149, 11 months ago

6 x square - 5 x minus 21 factorise

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Answered by umiko28

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Answered by Blacksmith1111

3

Answer:

$6x ^{2} - 5x - 21 \\ = 6x ^{2}- 14x+ 9x - 21 \\ = 2x(3x - 7) + 3(3x - 7) \\ = (2x + 3)(3x - 7)$

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