1.
Solve
a
2
– 12
a
= -27.
A.
a
= -27 or
a
= -15
B.
a
= 3 or
a
= 9
C.
a
= 9
D.
a
= 3
Hint
2.
Solve the equation by backtracking.6(
x
+ 5)
2
– 10 = 14
A.
x
= –3 and
x
= –7
B.
x
= –7
C.
x
= –3
D.
x
= 3
Hint
3.
Give the approximate solutions of this equation.(2
z
– 3)
2
– 31 = 33
A.
z
= –2.5 and
z
= 5.5
B.
z
= 2.5 and
z
= 5.5
C.
z
= 2.5 and
z
= –5.5
D.
z
= –2.5 and
z
= –5.5
Hint
4.
Find the solutions of the equation.4
y
2
– 16 = 0
A.
y
= –2 and
y
= –2
B.
y
= 2 and
y
= –2
C.
y
=
and
y
=
D.
y
=
and
y
=
Hint
5.
Find the solutions of the equation.3(
x
+ 1)
2
– 4 = 23
A.
x
= 4 and
x
= –2
B.
x
= 2 and
x
= –4
C.
x
= 2 and
x
= –2
D.
x
= 4 and
x
= –4
Hint
6.
Identify the perfect square trinomial.
A.
4
x
2
+ 6
x
+ 2
B.
25
x
2
+ 10
x
+ 1
C.
x
2
– 16
D.
x
2
– 7
x
+ 12
Hint
7.
In the quadratic formula, what does
b
2
– 4
ac
tell you.
A.
the vertex of a quadratic equation
B.
the number of solutions in a quadratic equation
C.
the places where a quadratic equation crosses the
x
-axis
D.
the solution(s) in a quadratic equation
Hint
8.
Find the quadratic equation with 0 solutions.
A.
x
2
– 2
x
– 3 = 0
B.
x
2
+ 4
x
– 12 = 0
C.
x
2
– 12
x
+ 36 = 0
D.
x
2
– 2
x
+ 5 = 0
Hint