Practice
Solve for x.a) 9x2 +3x−2 = 0
{0.3333,-0.6667}
{0.3333,-0.6667}
b) -5x2 −9x−2 = 0
{-1.5403,-0.2597}
{-1.5403,-0.2597}
c) -3x2 +9x−4 = 0
{0.5426,2.4574}
{0.5426,2.4574}
d) 1x2 −4x−4 = 0
{4.8284,-0.8284}
{4.8284,-0.8284}
e) 8x2 −7x−6 = 0
{1.4078,-0.5328}
{1.4078,-0.5328}
f) -3x2 +x+6 = 0
{-1.2573,1.5907}
{-1.2573,1.5907}
g) -7x2 +5x+6 = 0
{-0.6352,1.3495}
{-0.6352,1.3495}
h) -9x2 +x+3 = 0
{-0.5245,0.6356}
{-0.5245,0.6356}
i) 2x2 −4x−5 = 0
{2.8708,-0.8708}
{2.8708,-0.8708}
j) 8x2 +7x−7 = 0
{0.5952,-1.4702}
{0.5952,-1.4702}