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Elementary and Intermediate Algebra
Mark Dugopolski, Southeastern Louisiana University
Radicals and Rational Exponents
Enrich Your Math Word Power
1
nth root of a
A)
a square root
B)
the root of a
n
C)
a number b such that a
n
= b
D)
a number b such that b
n
= a
2
square of a
A)
a number b such that b
2
= a
B)
a
2
C)
| a |
D)
a
1/2
3
cube root of a
A)
a
3
B)
a number b such that b
3
= a
C)
a/3
D)
a number b such that b = a
3
4
principal root
A)
the main root
B)
the positive even root of a positive number
C)
the positive odd root of a negative number
D)
the negative odd root of a negative number
5
odd root of a
A)
the number b such that b
n
= a, where a is an odd number
B)
the opposite of the even root of a
C)
the nth root of a
D)
the number b such that b
n
= a, where n is an odd number
6
index of a radical
A)
the number n in na
1/2
B)
the number n in a
1/n
C)
the number n in a
n
D)
the number n in (a
n
)
1/2
7
like radicals
A)
radicals with the same index
B)
radicals with the same radicand
C)
radicals with the same radicand and the same index
D)
radicals with even indices
8
integral exponent
A)
an exponent that is an integer
B)
a positive exponent
C)
a rational exponent
D)
a fractional exponent
9
rational exponent
A)
an exponent that produces a rational number
B)
an integral exponent
C)
an exponent that is a real number
D)
an exponent that is a rational number
10
radicand
A)
the expression a
1/n
B)
the expression a
2
C)
the number a in a
1/n
D)
the number n in a
1/n
11
complex numbers
A)
a + bi, where a and b are real
B)
irrational numbers
C)
imaginary numbers
D)
(-1)
1/2
12
imaginary unit
A)
1
B)
-1
C)
i
D)
1
1/2
13
imaginary number
A)
a + bi, where a and b are real
B)
i
C)
a complex number
D)
a complex number in which b ≠ 0
14
complex conjugates
A)
i and (-1)
1/2
B)
a + bi and a - bi
C)
(a + b)(a - b)
D)
i and -1
2002 McGraw-Hill Higher Education
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