Practice
Solve for x.a) -5x2 +5x+4 = 0
{-0.5247,1.5247}
{-0.5247,1.5247}
b) -2x2 −4x+2 = 0
{-2.4142,0.4142}
{-2.4142,0.4142}
c) -7x2 −3x+4 = 0
{-1,0.5714}
{-1,0.5714}
d) 2x2 −3x+1 = 0
{1,0.5}
{1,0.5}
e) 6x2 +6x−5 = 0
{0.5408,-1.5408}
{0.5408,-1.5408}
f) 9x2 +3x−8 = 0
{0.7908,-1.1241}
{0.7908,-1.1241}
g) 6x2 −7x−8 = 0
{1.877,-0.7103}
{1.877,-0.7103}
h) 4x2 +8x+2 = 0
{-0.2929,-1.7071}
{-0.2929,-1.7071}
i) 6x2 +x−8 = 0
{1.0744,-1.241}
{1.0744,-1.241}
j) 3x2 +x−5 = 0
{1.135,-1.4684}
{1.135,-1.4684}