Math, asked by anmolkumar1308200693, 3 months ago

2x²+11x-21 factories

Answers

Answered by gayathriandsruthifun

1

Answer:

$2x^{2} +11x-21\\2*-21=-42\\42=14*3\\14-3=11\\=2x^2+14x-3x-21\\=2x(x+7)-3(x+7)\\=(x+7)(2x-3)$

Answered by rajasekhar111

0

2x²+11x-21 = 2x²+14x-3x-21

= (x+7) (2x-3)

=> x = -7 (or) 3/2

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