Practice
Solve for x.a) 7x2 +x−3 = 0
{0.5871,-0.73}
{0.5871,-0.73}
b) -4x2 −2x+9 = 0
{-1.7707,1.2707}
{-1.7707,1.2707}
c) -8x2 −x+8 = 0
{-1.0645,0.9395}
{-1.0645,0.9395}
d) -2x2 +9x+4 = 0
{-0.4075,4.9075}
{-0.4075,4.9075}
e) -4x2 +2x+8 = 0
{-1.1861,1.6861}
{-1.1861,1.6861}
f) 9x2 +6x−6 = 0
{0.5486,-1.2153}
{0.5486,-1.2153}
g) -5x2 −9x+7 = 0
{-2.3866,0.5866}
{-2.3866,0.5866}
h) -7x2 +6x+4 = 0
{-0.4404,1.2975}
{-0.4404,1.2975}
i) -2x2 +7x−4 = 0
{0.7192,2.7808}
{0.7192,2.7808}
j) -2x2 −5x+3 = 0
{-3,0.5}
{-3,0.5}