Question

2x²+28x-30 factorise ​

Answer 1

$2 {x}^{2} + 28x - 30 \\ 2 {x}^{2} + 30x - 2x - 30 \\ 2x(x + 15) - 2(x + 15) \\ (2x - 2)(x + 15) \\2(x - 1)(x + 15)$

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