Practice
Solve for x.a) 1x2 −6x−5 = 0
{6.7417,-0.7417}
{6.7417,-0.7417}
b) -1x2 −5x−4 = 0
{-4,-1}
{-4,-1}
c) 2x2 −7x+4 = 0
{2.7808,0.7192}
{2.7808,0.7192}
d) 5x2 +6x−2 = 0
{0.2718,-1.4718}
{0.2718,-1.4718}
e) 8x2 +6x−6 = 0
{0.5687,-1.3187}
{0.5687,-1.3187}
f) -1x2 −4x+9 = 0
{-5.6056,1.6056}
{-5.6056,1.6056}
g) 3x2 +x−7 = 0
{1.3699,-1.7033}
{1.3699,-1.7033}
h) -8x2 +3x+6 = 0
{-0.6986,1.0736}
{-0.6986,1.0736}
i) -1x2 −3x−2 = 0
{-2,-1}
{-2,-1}
j) -9x2 −x+4 = 0
{-0.7245,0.6134}
{-0.7245,0.6134}