Practice
Solve for x.a) 1x2 −9x+4 = 0
9/2 ± /2
9/2 ± /2
b) -1x2 −8x+3 = 0
-4 ±
-4 ±
c) 5x2 −5x−4 = 0
1/2 ± /10
1/2 ± /10
d) -8x2 −7x+8 = 0
-7/16 ± /16
-7/16 ± /16
e) -8x2 +9x−2 = 0
9/16 ± /16
9/16 ± /16
f) 4x2 +9x−2 = 0
-9/8 ± /8
-9/8 ± /8
g) 1x2 −9x+6 = 0
9/2 ± /2
9/2 ± /2
h) 1x2 +8x+1 = 0
-4 ±
-4 ±
i) 7x2 +3x−3 = 0
-3/14 ± /14
-3/14 ± /14
j) -5x2 −3x+9 = 0
-3/10 ± 3/10
-3/10 ± 3/10