Practice
Solve for x.a) -9x2 −8x+6 = 0
{-1.3741,0.4852}
{-1.3741,0.4852}
b) -4x2 +7x+6 = 0
{-0.6302,2.3802}
{-0.6302,2.3802}
c) 4x2 −9x−4 = 0
{2.6302,-0.3802}
{2.6302,-0.3802}
d) 2x2 −x−4 = 0
{1.6861,-1.1861}
{1.6861,-1.1861}
e) -9x2 +6x+8 = 0
{-0.6667,1.3333}
{-0.6667,1.3333}
f) -2x2 −9x+3 = 0
{-4.8117,0.3117}
{-4.8117,0.3117}
g) -6x2 −x+9 = 0
{-1.3109,1.1442}
{-1.3109,1.1442}
h) 4x2 −2x−3 = 0
{1.1514,-0.6514}
{1.1514,-0.6514}
i) -7x2 +4x+8 = 0
{-0.8209,1.3923}
{-0.8209,1.3923}
j) -1x2 −x+9 = 0
{-3.5414,2.5414}
{-3.5414,2.5414}