Practice
Solve for x.a) -4x2 +7x+3 = 0
{-0.3561,2.1061}
{-0.3561,2.1061}
b) 9x2 +6x−7 = 0
{0.6095,-1.2761}
{0.6095,-1.2761}
c) -3x2 −7x+6 = 0
{-3,0.6667}
{-3,0.6667}
d) 1x2 +8x−8 = 0
{0.899,-8.899}
{0.899,-8.899}
e) 3x2 −8x−2 = 0
{2.8968,-0.2301}
{2.8968,-0.2301}
f) 3x2 +5x−5 = 0
{0.7033,-2.3699}
{0.7033,-2.3699}
g) -4x2 −6x+4 = 0
{-2,0.5}
{-2,0.5}
h) -4x2 −4x+3 = 0
{-1.5,0.5}
{-1.5,0.5}
i) -2x2 +5x−1 = 0
{0.2192,2.2808}
{0.2192,2.2808}
j) -2x2 −9x−5 = 0
{-3.8508,-0.6492}
{-3.8508,-0.6492}