Using the quadratic formula 8x^2-20x=8? please help
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help me please
ANSWERS: 2
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subtract 8 to the other side then you have -20 plus/minus √(20squared - 4(8)(8) this is all over 2(8) the q formula is as follows: -b +/- √(bsquared-4ac) _________________________________ 2a
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(-b +/- sqrt(b^2 - 4ac))/(2a) 8x^2 - 20x = 8 8x^2 - 20x - 8 = 0 x = (-(-20) +/- sqrt((-20)^2 - 4*8*(-8))/(2*8) = (20 +/- sqrt(400 -(-256))/16 = (20 +/- sqrt(656))/16 ~= (20 +/- 25.61249695)/16 = 45.61249695/16 & = -5.61249695/16 ~= 2.850781059 & ~= -0.350781059
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