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algebra solving quadratic equations

label Algebra
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Solve the equation. 12x^2-2x-2=0

Dec 10th, 2014

12x^2-2x-2=0

2(6x^2-x-1)=0

6x^2-x-1=0

6x^2-3x+2x-1=0

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

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

3x+1=0, 2x-1+0

x= -1/3 , 1/2

Dec 10th, 2014

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