Practice
Solve for x.a) -1x2 +7x−9 = 0
{1.6972,5.3028}
{1.6972,5.3028}
b) 4x2 −5x+1 = 0
{1,0.25}
{1,0.25}
c) 7x2 +6x−1 = 0
{0.1429,-1}
{0.1429,-1}
d) -4x2 −3x+8 = 0
{-1.8381,1.0881}
{-1.8381,1.0881}
e) 1x2 −6x+2 = 0
{5.6458,0.3542}
{5.6458,0.3542}
f) -5x2 +2x+8 = 0
{-1.0806,1.4806}
{-1.0806,1.4806}
g) 2x2 −5x−7 = 0
{3.5,-1}
{3.5,-1}
h) 8x2 −9x−6 = 0
{1.5952,-0.4702}
{1.5952,-0.4702}
i) -2x2 −9x+8 = 0
{-5.2604,0.7604}
{-5.2604,0.7604}
j) 6x2 +x−9 = 0
{1.1442,-1.3109}
{1.1442,-1.3109}