abcd Quadratic Equations - Quadratic Formula(L2)
Quadratic Equations - Quadratic Formula(L2)


Practice

Solve for x.
a)    1x2 −9x+4 = 0
9/2 ± 65/2

b)    -1x2 −8x+3 = 0
-4 ± 19

c)    5x2 −5x−4 = 0
1/2 ± 105/10

d)    -8x2 −7x+8 = 0
-7/16 ± 305/16

e)    -8x2 +9x−2 = 0
9/16 ± 17/16

f)    4x2 +9x−2 = 0
-9/8 ± 113/8

g)    1x2 −9x+6 = 0
9/2 ± 57/2

h)    1x2 +8x+1 = 0
-4 ± 15

i)    7x2 +3x−3 = 0
-3/14 ± 93/14

j)    -5x2 −3x+9 = 0
-3/10 ± 321/10