ONLN 0 x= - Mathcounts4ever.com

ONLN
I-
m\
E v a l u a t e t h e e x p r e s s i o n s . U s e a^^, b = 5 a n d c = 4 .
1.
b +9
2.
a-c
3.
a +8
4.
12
6.
c-1
5.
b
Total Problems
48
Problems Correct
Percent Correct
c
7.
be
8.
a + -c
9.
4b-a
10.
4 (b + c )
11.
12.
b^
13.
c^-a^
14.
33
a +b
15.
16.
ca+ b
c
18.
a2
+b
19.
20.
c
17.
2k+2
a
ones cmH
AlOD OML^
luate t h e expressions. U s e x=2, y=7 a n d z=-5.
21.
z-y
25.
4xy -
2 ^
3 ( x + y)
3aN 10^
22^
2
2y+ x
26^ x y + 1
30.
34.
2xyz
xz'^
y'-6y
41.
y
Math 1F8771
0
46.
43.
11
-y
xz
28 + y
28.
x=
32.1 3"
35.
39.
©
-z
23.
47.
ymr
^
2"
10y+z
z"
62
3 6 . \
40.
yz + 4 0
44. -3xz
X2(X +
y)
©Instructional Fair, Inc.
Name.
Variables
and
Equations
Substitution
Substitute and simplify.
a = 3, b = -9, c = 5
1.
a2 +
b^ =
6. (b + c y =
2. (a + b)2 =
7. b^ + c^=
3. a + b - c =
8. a'-(b + cy=
4. ( c - a ) 2 =
9. -4b + (a + c)2 =
10. ot>c =
5. 2 a - b - 3 c =
Substitute and simplify.
a = -6, b = -3, c = 4
1. 3 a - 4 b =
6. (a + b)2 =
2. 7c + b' =
7. c 2 - a b =
3. o'-b' =
8. 2c + 3 a - 4 b =
4.
(a-b)2=
9. a 2 - ( b + p)^ =
5.
a2 + b2 =
®1995 Kelley Wingate Publications, Inc.
10. (a + b + c)2 =
14
CD-3732

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