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Trigonometry
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OpenStudy (anonymous):
Solve (2x+1)(x-1)=14
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OpenStudy (anonymous):
2x*x + 2x*-1 + 1*x + 1*-1 = 14 2x^2 -x -15 = 0
OpenStudy (anonymous):
(2x+1)(x-1)=14 2x^2-x-1=14 -14 -14 2x^2-x-15=0 Apply quadratic equation if you need to find the zeros of the equation.
OpenStudy (solomonzelman):
x=3 or x= -5/2
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