
Concept explainers
In Exercises 1 and 2, use the properties of exponents to simplify.
1.
- a. x4 · x3
- b. x12x7
- c. (4ay)4
- d. (34)4
- e. 23 · 22
- f. (x4)2
a.

To simplify: The expression x4⋅x3 by using the properties of exponents.
Answer to Problem 1TE
The simplified form of x4⋅x3 is x7.
Explanation of Solution
Formula used:
Product property:
For real number a and integers m and n, the product property is am⋅an=am+n.
Calculation:
The given expression is x4⋅x3.
Here, a=x, m=4 and n=3.
Use product property and simplify the expression as follows.
x4⋅x3=x4+3=x7
Therefore, the simplified form of x4⋅x3 is x7.
b.

To simplify: The expression x12x7 by using the properties of exponents.
Answer to Problem 1TE
The simplified form of x12x7 is x5.
Explanation of Solution
Formula used:
Quotient property:
For real number a and integers m and n, the quotient property is aman=am−n,a≠0.
Calculation:
The given expression is x12x7.
Here, a=x, m=12 and n=7.
Use quotient property and simplify the expression as follows.
x12x7=x12−7=x5
Therefore, the simplified form of x12x7 is x5.
c.

To simplify: The expression (4ay)4 by using the properties of exponents.
Answer to Problem 1TE
The simplified form of (4ay)4 is 256a4y4.
Explanation of Solution
Formula used:
Power of a product property:
For real numbers a and b and integers m and n, the power of product property is (ab)m=ambm.
Calculation:
The given expression is (4ay)4.
Here, a=4a, b=y and m=4.
Use the above property and simplify the expression as follows.
(4ay)4=(4a)4(y)4=256a4y4
Therefore, the simplified form of (4ay)4 is 256a4y4.
d.

To simplify: The expression (3z)4 by using the properties of exponents.
Answer to Problem 1TE
The simplified form of (3z)4 is 34z4.
Explanation of Solution
Formula used:
Power of a Quotient property:
For real numbers a and b and integers m and n, the power of Quotient property is (ab)m=ambm, for b≠0.
Calculation:
The given expression is (3z)4.
Here, a=3, b=z and m=4.
Use the above property and simplify the expression as follows.
(3z)4=34z4=81z4
Therefore, the simplified form of (3z)4 is 81z4.
e.

To simplify: The expression 23⋅22 by the using properties of exponents.
Answer to Problem 1TE
The simplified form of 23⋅22 is 32.
Explanation of Solution
Formula used:
Product property:
For real number a and integers m and n, the product property is am⋅an=am+n.
Calculation:
The given expression is 23⋅22.
Here, a=2, m=3 and n=2.
Use the product property and simplify the expression as follows.
23⋅22=23+2=25=32
Therefore, the simplified form of 23⋅22 is 32.
f.

To simplify: The expression (x4)2 by using the properties of exponents.
Answer to Problem 1TE
The simplified form of (x4)2 is x8.
Explanation of Solution
Formula used:
Power of a power property:
For real number a and integers m and n, the power of a power property is (am)n=amn.
Calculation:
The given expression is (x4)2.
Note that here, a=x, m=4 and n=2.
Use the above property and simplify the expression as follows.
(x4)2=x4⋅2=x8
Therefore, the simplified form of (x4)2 is x8.
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Chapter 5 Solutions
EBK COLLEGE ALGEBRA IN CONTEXT
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