Practice
Solve for x.a) 7x2 −9x−6 = 0
{1.77,-0.4843}
{1.77,-0.4843}
b) -5x2 +9x+8 = 0
{-0.6524,2.4524}
{-0.6524,2.4524}
c) 4x2 −4x+1 = 0
{0.5,0.5}
{0.5,0.5}
d) 3x2 +9x+1 = 0
{-0.1156,-2.8844}
{-0.1156,-2.8844}
e) 9x2 −4x−1 = 0
{0.6228,-0.1784}
{0.6228,-0.1784}
f) 5x2 +5x+1 = 0
{-0.2764,-0.7236}
{-0.2764,-0.7236}
g) -1x2 −6x+1 = 0
{-6.1623,0.1623}
{-6.1623,0.1623}
h) -2x2 −7x+6 = 0
{-4.2122,0.7122}
{-4.2122,0.7122}
i) -3x2 +7x+3 = 0
{-0.3699,2.7033}
{-0.3699,2.7033}
j) 2x2 −7x+1 = 0
{3.3508,0.1492}
{3.3508,0.1492}