Practice
Solve for x.a) 8x2 −9x−3 = 0
{1.394,-0.269}
{1.394,-0.269}
b) 1x2 +7x−4 = 0
{0.5311,-7.5311}
{0.5311,-7.5311}
c) 5x2 +5x−9 = 0
{0.9318,-1.9318}
{0.9318,-1.9318}
d) 5x2 +9x−8 = 0
{0.6524,-2.4524}
{0.6524,-2.4524}
e) 5x2 +9x+1 = 0
{-0.119,-1.681}
{-0.119,-1.681}
f) -3x2 −8x+3 = 0
{-3,0.3333}
{-3,0.3333}
g) -4x2 −2x+9 = 0
{-1.7707,1.2707}
{-1.7707,1.2707}
h) -4x2 +8x−4 = 0
{1,1}
{1,1}
i) -1x2 −5x+6 = 0
{-6,1}
{-6,1}
j) 3x2 +4x−3 = 0
{0.5352,-1.8685}
{0.5352,-1.8685}