Practice
Solve for x.a) 7x2 −3x−2 = 0
{0.7902,-0.3616}
{0.7902,-0.3616}
b) 2x2 +9x+5 = 0
{-0.6492,-3.8508}
{-0.6492,-3.8508}
c) -1x2 +6x−1 = 0
{0.1716,5.8284}
{0.1716,5.8284}
d) -3x2 −5x+6 = 0
{-2.4748,0.8081}
{-2.4748,0.8081}
e) -3x2 +8x+9 = 0
{-0.8525,3.5191}
{-0.8525,3.5191}
f) 1x2 +9x+2 = 0
{-0.228,-8.772}
{-0.228,-8.772}
g) 5x2 −4x−9 = 0
{1.8,-1}
{1.8,-1}
h) -5x2 −9x+2 = 0
{-2,0.2}
{-2,0.2}
i) -1x2 −9x+5 = 0
{-9.5249,0.5249}
{-9.5249,0.5249}
j) 1x2 −6x+8 = 0
{4,2}
{4,2}