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A.A B.B C.C D.D B. Simplify (4x –2 )(xy –3 ). A. B. C. D.
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Modern Algebra II
Sections 6.1, 6.2 Review
A. AB. BC. CD. D
A. Simplify (–3x2y)(5x3y5).
A. –15x5y6
B. –15x6y5
C. 15x5y6
D.
A. AB. BC. CD. D
B. Simplify (4x–2)(xy–3).
A.
B.
C.
D.
1. A2. B3. C4. D
A. Simplify (x3)5.
A. x15
B. x8
C. x2
D.
1. A2. B3. C4. D
B. Simplify .
A.
B.
C.
D.
A. AB. BC. CD. D
A.
B.
C.
D.
A. AB. BC. CD. D
A. 2
B. 20
C. 2 × 102
D. 2.592 × 1013
BIOLOGY A petri dish started with 3.6 × 105 germs in it. A half hour later, there are 7.2 × 107. How many times as great is the amount a half hour later?
A. AB. BC. CD. D
A. yes, 5
B. yes, 8
C. yes, 3
D. no
A. Is a polynomial? If it a polynomial,
state the degree of the polynomial.
A. AB. BC. CD. D
B. Is a polynomial? If it a polynomial, state the degree of the polynomial.
A. yes, 2
B. yes,
C. yes, 1
D. no
1. A2. B3. C4. D
A. 7x2 + 3x – 8
B. –x2 + 3x – 8
C. –x2 + 3x + 2
D. –x2 + x + 2
A. Simplify (3x2 + 2x – 3) – (4x2 + x – 5).
1. A2. B3. C4. D
A. 9x2 + 6x + 7
B. –7x2 – 5x + 6
C. 3x2 – 6x + 7
D. 3x2 – 2x + 6
B. Simplify (–3x2 – 4x + 1) – (4x2 + x – 5).
1. A2. B3. C4. D
A. –3x2 – 2x + 5
B. –4x4 – 3x2 – 6x
C. –3x4 + 2x2 – 5x
D. –3x4 – 2x3 + 5x
Find –x(2x3 – 2x + 5).
A. AB. BC. CD. D
A. x3 + 7x2 + 10x – 8
B. x2 + 4x + 2
C. x3 + 3x2 – 2x + 8
D. x3 + 7x2 + 14x – 8
Find (x2 + 3x – 2)(x + 4).