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