Chapter 9_ Sample Exam
Please answer all the questions and show work where appropriate.
1. Simplify: a. yx3
32 b.
356
16 yxโ
2. Simplify:
()
5
3
623
25 zyx
3. Graph the function 2)( += xxf and state the domain.
Assume all variables are positive.
4. Simplify: 2
(
)
xyxxyx 36499 53 โโ
5. Multiply:
()
2
223 yx โ
6. Rationalize: a. 52
5
27
23
xy
xyโ
b. 23
2
โ
7. Simplify: a. 153 โโ
โ b. i
i
+
+
4
32
8. Solve: 02)72(2
3=โโxx
9. Solve: 1312 =+โโ xx
10. What length must a pendulum be in order for one complete cycle to take 1.2
seconds? (Use 32
2L
T
ฯ
=where T is in seconds and L is in feet.)
