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


Practice

Solve for x.
a)    -4x2 +2x+3 = 0
1/4 ± 13/4

b)    2x2 +x−5 = 0
-1/4 ± 41/4

c)    4x2 −8x−1 = 0
1 ± 5/2

d)    1x2 +4x−3 = 0
-2 ± 7

e)    -7x2 −5x+3 = 0
-5/14 ± 109/14

f)    1x2 +9x+1 = 0
-9/2 ± 77/2

g)    6x2 −4x−3 = 0
1/3 ± 22/6

h)    -5x2 +8x−2 = 0
4/5 ± 6/5

i)    -7x2 +9x+2 = 0
9/14 ± 137/14

j)    5x2 −5x−5 = 0
1/2 ± 5/2