Question

factorize the 15xsquare+7x+2​

Answer 1

$\huge \bf \colorbox{red}{given}$

$15x ^{2} + 7x + 2$

ŚØĹÙŤÌŐŃ

==》Use an AC method: Find apair of factors of AC= 15 . 2 = 30 which differ by B = 7.

==》The pair 10, 3 works.

==》Use this pair to split the middle term then factor by grouping as follows:

$15 {x}^{2} + 7x + 2 \\ \\ = 15 {x}^{2} + 10x - 3x + 2 \\ \\ = (15 {x}^{2} + 10x) - (3x + 2) \\ \\ = 5x(3x + 2) - 1(3x + 2) \\ \\ = (5x - 1)(3x + 2)$

$\huge \fcolorbox{red}{bl}{be \: brainly}$

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