Question

Class

12 question

Factorise

$2 {x}^{2} + 3x - 90$
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Answer 1

refer to the attachment

$<marquee>Ansh$

Answer 2

Explanation:

Hey mate

${x}^{2} + 3x - 90 \\ therefore \: by \: using \: splitting \: term \: method \\ {x}^{2} + 15 x - 12x - 90 \\ now = > taking \: common \\ = > x(x + 15) - 12(x + 15) \\ = > (x - 12) \: (x + 15) = 0 \\ therefore \\ x - 12 = 0 \: or \: x + 15 = 0 \\ x = 12 \: or \: x = - 15$