Practice
Solve for x.a) 1x2 +6x−3 = 0
{0.4641,-6.4641}
{0.4641,-6.4641}
b) -2x2 −8x+7 = 0
{-4.7386,0.7386}
{-4.7386,0.7386}
c) -5x2 −3x+4 = 0
{-1.2434,0.6434}
{-1.2434,0.6434}
d) -4x2 −2x+4 = 0
{-1.2808,0.7808}
{-1.2808,0.7808}
e) 5x2 +x−5 = 0
{0.905,-1.105}
{0.905,-1.105}
f) 6x2 −9x−7 = 0
{2.065,-0.565}
{2.065,-0.565}
g) -4x2 −9x+8 = 0
{-2.9321,0.6821}
{-2.9321,0.6821}
h) 3x2 −4x−2 = 0
{1.7208,-0.3874}
{1.7208,-0.3874}
i) 8x2 −7x−4 = 0
{1.269,-0.394}
{1.269,-0.394}
j) 5x2 −8x+2 = 0
{1.2899,0.3101}
{1.2899,0.3101}