1.
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.
14
a
+ 8
b
; 12
C.
10
a
+ 14
b
; -8
D.
9
a
+ 15
b
; -12
Hint
2.
Find the difference:
A.
-3
x
2
+
x
- 5
B.
-3
x
2
- 7
x
- 5
C.
3
x
2
- 7
x
- 5
D.
-3
x
2
- 7
x
+ 1
Hint
3.
Start with a square with side length. Create a large rectangle by adding two more squares of the same size, and remove a strip with a width of 1. What is the area of the new rectangle?
A.
x
(
x
+ 3) =
x
2
+ 3
x
B.
x
(3
x
– 1) = 3
x
2
–
x
C.
x
(
x
– 1) =
x
2
–
x
D.
x
(3
x
+ 1) = 3
x
2
+
x
Hint
4.
Write the expression in factored form.3
x
2
– 6
x
A.
x
(
x
– 6)
B.
3
x
(
x
+ 2)
C.
3
x
(
x
– 6)
D.
3
x
(
x
– 2)
Hint
5.
Use the distributive property to expand the expression.4
a
(2 + 7
a
)
A.
6
a
+ 28
a
2
B.
8
a
+
a
2
C.
8
a
+ 28
a
2
D.
8 + 28
a
2
Hint