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23 February, 01:45

Factor the polynomial by grouping 7x2+16x-15

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  1. 23 February, 04:47
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    16x can be broken down into factors of - 105.

    21 and - 5 come to mind.

    7x² + 21x - 5x - 15

    7x (x + 3) - 5 (x + 3)

    (7x - 5) (x + 3) is the factorised form.
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