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OpenStudy (anonymous):
4m^2-4m-15
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jhonyy9 (jhonyy9):
4+/- sqrt 256 m_1,_2= -------------- 8
OpenStudy (anonymous):
4m^2+6m-10m-15, 2m(2m+3) -5(2m+3), finally (2m-5)(2m+3)
jhonyy9 (jhonyy9):
4 +/- 16 m_1,_2 = --------- = 20/8 = 5/2 and -12/8 = -3/2 8
OpenStudy (anonymous):
m=5/2 and -3/2
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