Elementary Algebra Skill
Solving Quadratic Equations: Square Root Law
Solve each equation by taking square roots.
1)
r
2
= 96 2)
x
2
= 7
3)
x
2
= 29 4)
r
2
= 78
5)
b
2
= 34 6)
x
2
= 0
7)
a
2
+ 1 = 2 8)
n
2
− 4 = 77
9)
m
2
+ 7 = 6 10)
x
2
− 1 = 80
11)
4
x
2
− 6 = 74 12)
3
m
2
+ 7 = 301
13)
7
x
2
− 6 = 57 14)
10
x
2
+ 9 = 499
15)
(
p
− 4
)
2
= 16 16)
(
2
k
− 1
)
2
= 9
17)
(
6
x
+ 2
)
2
+ 4 = 28 18)
10
(
x
− 7
)
2
= 440
19)
9
(
2
m
− 3
)
2
+ 8 = 449 20)
4
(
6
x
− 1
)
2
− 5 = 223
