3x^2+5x-2=0 solve quadratic equation by factoring

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asked Nov 17, 2017 135k views

1 Answer

Pavpanchekha · Answer 1 · 2017-11-20T20:24:19+0000

hmm

trial and error
factor
(3x-2)(x+1) nope
(3x+2)(x-1) nope
(3x-1)(x+2) yes

(3x-1)(x+2)=0

set them to zero
3x-1=0
3x=1
x=1/3

x+2=0
x=-2

x=-2 and 1/3

3x^2+5x-2=0 solve quadratic equation by factoring

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