Practice
Solve for x.a) -2x2 +7x+2 = 0
7/4 ± /4
7/4 ± /4
b) 6x2 +5x−8 = 0
-5/12 ± /12
-5/12 ± /12
c) 5x2 −2x−9 = 0
1/5 ± /5
1/5 ± /5
d) 1x2 −6x−4 = 0
3 ±
3 ±
e) -9x2 −9x+3 = 0
-1/2 ± /6
-1/2 ± /6
f) 6x2 +4x−1 = 0
-1/3 ± /6
-1/3 ± /6
g) 1x2 +3x−1 = 0
-3/2 ± /2
-3/2 ± /2
h) 3x2 +6x−8 = 0
-1 ± /3
-1 ± /3
i) -4x2 +4x+7 = 0
1/2 ±
1/2 ±
j) -1x2 −7x+1 = 0
-7/2 ± /2
-7/2 ± /2
