Practice
Solve for x.a) 3x2 −x−7 = 0
1/6 ± /6
1/6 ± /6
b) -5x2 +9x+6 = 0
9/10 ± /10
9/10 ± /10
c) 1x2 −5x−8 = 0
5/2 ± /2
5/2 ± /2
d) 1x2 −4x−9 = 0
2 ±
2 ±
e) -3x2 −6x+5 = 0
-1 ± 2/3
-1 ± 2/3
f) 5x2 +5x−5 = 0
-1/2 ± /2
-1/2 ± /2
g) 3x2 +x−3 = 0
-1/6 ± /6
-1/6 ± /6
h) 1x2 −6x+2 = 0
3 ±
3 ±
i) 2x2 −5x+1 = 0
5/4 ± /4
5/4 ± /4
j) 9x2 +6x−6 = 0
-1/3 ± /3
-1/3 ± /3