Practice
Solve for x.a) -3x2 −9x−3 = 0
-3/2 ± /2
-3/2 ± /2
b) 7x2 +7x−6 = 0
-1/2 ± /14
-1/2 ± /14
c) 6x2 +x−9 = 0
-1/12 ± /12
-1/12 ± /12
d) 3x2 −6x−6 = 0
1 ±
1 ±
e) 8x2 −4x−9 = 0
1/4 ± /4
1/4 ± /4
f) -4x2 +x+8 = 0
1/8 ± /8
1/8 ± /8
g) 7x2 −5x−8 = 0
5/14 ± /14
5/14 ± /14
h) 8x2 −2x−7 = 0
1/8 ± /8
1/8 ± /8
i) 2x2 −6x+3 = 0
3/2 ± /2
3/2 ± /2
j) 7x2 +2x−4 = 0
-1/7 ± /7
-1/7 ± /7