Practice
Solve for x.a) 1x2 −3x−3 = 0
{3.7913,-0.7913}
{3.7913,-0.7913}
b) -2x2 +9x−3 = 0
{0.3625,4.1375}
{0.3625,4.1375}
c) 8x2 +8x+2 = 0
{-0.5,-0.5}
{-0.5,-0.5}
d) 5x2 +8x+1 = 0
{-0.1367,-1.4633}
{-0.1367,-1.4633}
e) 9x2 +7x−4 = 0
{0.3829,-1.1607}
{0.3829,-1.1607}
f) 8x2 +7x+1 = 0
{-0.1798,-0.6952}
{-0.1798,-0.6952}
g) 5x2 −x−5 = 0
{1.105,-0.905}
{1.105,-0.905}
h) -5x2 −4x+2 = 0
{-1.1483,0.3483}
{-1.1483,0.3483}
i) -9x2 −4x+2 = 0
{-0.7434,0.2989}
{-0.7434,0.2989}
j) 8x2 −6x−1 = 0
{0.8904,-0.1404}
{0.8904,-0.1404}