Practice
Solve for x.a) 3x2 +6x+2 = 0
{-0.4226,-1.5774}
{-0.4226,-1.5774}
b) -5x2 −x+2 = 0
{-0.7403,0.5403}
{-0.7403,0.5403}
c) -7x2 +8x+4 = 0
{-0.3762,1.519}
{-0.3762,1.519}
d) -8x2 +6x+9 = 0
{-0.75,1.5}
{-0.75,1.5}
e) -6x2 −6x+2 = 0
{-1.2638,0.2638}
{-1.2638,0.2638}
f) -2x2 −9x+6 = 0
{-5.0895,0.5895}
{-5.0895,0.5895}
g) -2x2 −x+1 = 0
{-1,0.5}
{-1,0.5}
h) -9x2 −2x+9 = 0
{-1.1173,0.895}
{-1.1173,0.895}
i) -8x2 −3x+8 = 0
{-1.2049,0.8299}
{-1.2049,0.8299}
j) 2x2 −2x−1 = 0
{1.366,-0.366}
{1.366,-0.366}