1.
Solve
a
2
– 12
a
= -27.
A.
a
= 3 or
a
= 9
B.
a
= -27 or
a
= -15
C.
a
= 3
D.
a
= 9
Hint
2.
Factor
x
2
– 7
x
+ 12.
A.
(
x
+ 6)(
x
+ 2)
B.
(
x
– 3)(
x
– 4)
C.
(
x
– 6)(
x
– 2)
D.
(
x
+ 3)(
x
+ 4)
Hint
3.
Factor
x
2
+ 6
x
– 7.
A.
(
x
+ 3)(
x
+ 3)
B.
(
x
– 3)(
x
– 3)
C.
(
x
– 1)(
x
+ 7)
D.
(
x
+ 1)(
x
– 7)
Hint
4.
When factoring quadratic trinomials of the form
x
2
+
b
x
+
c
, what is true about
m
and
n
if the factored form is (
x
+ m)(
x
+
n
)?
A.
Their sum is equal to
b
, and their product is equal to
c
.
B.
The sum of
b
and
c
is equal to the product of m and
n
.
C.
Their sum is equal to
c
, and their product is equal to
b
.
D.
The product of
b
and
c
is equal to the sum of m and
n
.
Hint
5.
Suppose the area of a square is
x
2
– 10
x
+ 25. What is the perimeter of the square?
A.
2
x
B.
4
x
– 20
C.
4
x
D.
2
x
– 10
Hint