Question

3
$3 {x}^{2} + 13x - 10 = 0$
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Answer 1

$3x {}^{2} + 13x - 10 = 0 \\ 3x {}^{2} + 15x - 2x - 10 = 0 \\ 3x(x + 5) - 2(x+ 5) = 0 \\ (3x - 2)(x + 5) = 0 \\ x = 2 \div 3 \: or( - 5)$

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