Question

How do you factor 15x2−x–2 by grouping?

Answer 1

$15x ^{2} - 2 \times - 2 = 15x ^{2} - 6 \times + 5 \times - 2 = 5 \times (3 \times + 1) - 2(3 \times + 1) = (3 \times + 1)3 \times - 2)$

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