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Mathematics 54 Online
OpenStudy (anonymous):

40x^2-9x-9=0

OpenStudy (amistre64):

sometimes its just best to go to the quadratic formula

OpenStudy (amistre64):

\[x=\frac{1}{2}(9\pm \sqrt{9^2-4(40)(-9)})\]

OpenStudy (amistre64):

forgot a 40 in there

OpenStudy (hoblos):

=(8x+3)(5x-3) =>x=-3/8 or x=3/5

OpenStudy (amistre64):

the 1/2 = 1/80

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