1.
Simplify 2
x
2
+ 5
x
2
+ 7
x
.
A.
7
x
2
+ 7
x
B.
14
x
2
C.
2
x
2
+ 12
x
D.
14
x
Hint
2.
Simplify the polynomial 7
x
- 2
y
.
A.
5
x
B.
7
x
- 2
y
C.
5
y
D.
5
xy
Hint
3.
Simplify the expression 2
a
+ 7
b
+ 12
a
+ 3
b
and then evaluate if
a
= 2 and
b
= -2.
A.
9
a
+ 15
b
; -12
B.
14
a
+ 8
b
; 12
C.
10
a
+ 14
b
; -8
D.
14
a
+ 10
b
; 8
Hint
4.
Write the expression in factored form.3
x
2
– 6
x
A.
3
x
(
x
– 6)
B.
3
x
(
x
– 2)
C.
x
(
x
– 6)
D.
3
x
(
x
+ 2)
Hint
5.
Use the distributive property to expand the expression.4
a
(2 + 7
a
)
A.
8 + 28
a
2
B.
6
a
+ 28
a
2
C.
8
a
+ 28
a
2
D.
8
a
+
a
2
Hint