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mathprep
Section02MultiplyingTest
v10

Test Section02MultiplyingTest

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Jump to Problem:	1	2	3	4	5	6	7	8	9	10

Problem 1.

(1 point)

$(3^x)(3^{-x}+3^{-1}) =$

A. $1 + 3^{-1}$
B. $3^{-2x} + 3^{-x}$
C. $3^{-x^2} + 3^{-x}$
D. $1 + 3^{-x}$
E. $1 + 3^{x-1}$

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Problem 2.

(1 point)

$(2x-9z)3z =$

A. $6x-27z^2$
B. $6xz-27z^2$
C. $6x-9z^2$
D. $6xz+9z^2$
E. $6xz-9z$

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Problem 3.

(1 point)

$5z^{-2}(3z^{-1}+2z^2) =$

A. $15z^{-3} + 2z^2$
B. $15z^{-3}$
C. $15z^2 + 10z^{-4}$
D. $15z^2$
E. $15z^{-3} + 10$

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Problem 4.

(1 point)

$4(x-3)^2+7 =$

A. $16x^2 -137$
B. $16x^2 - 96x + 151$
C. $4x^2 - 29$
D. $4x^2 - 24x + 43$
E. $4x^2 + 24x + 43$

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Problem 5.

(1 point)

$(x+3)(3x-8) =$

A. $3x^2-5$
B. $3x^2+x-24$
C. $3x^2-24$
D. $3x^2-x-24$
E. $3x^2-17x+24$

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Problem 6.

(1 point)

$(x+2)(5x-1)+2(3x - x^2) =$

A. $4x^2+15x - 2$
B. $3x^2 + 15x - 2$
C. $-x^2+15x - 2$
D. $4x^2 + 12x - 2$
E. $8x^2 + 24x - 4$

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Problem 7.

(1 point)

$6s^{-2}({1\over2}s^2 - s^3) =$

A. $-3s$
B. $-6s^{-6}$
C. $-6s$
D. $3s^{-4} - 6s^{-6}$
E. $3 - 6s$

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Problem 8.

(1 point)

$(x+1)(x-1)-1 =$

A. $x^2$
B. $x^2-2x-2$
C. $x^2-2x$
D. $x^2+2x-2$
E. $x^2-2$

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Problem 9.

(1 point)

$(x+3)({24\over x}+2) =$

A. $24x^{-2} + 6$
B. $30$
C. ${72\over x} + 2x$
D. $2x + 30 + {72\over x}$
E. $24x^{-2} + 2x + 6 + {72\over x}$

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Problem 10.

(1 point)

$(3a-5)(a+4) =$

A. $3a^2-a-1$
B. $3a^2+7a-20$
C. $3a^2+8a-20$
D. $3a^2-7a-20$
E. $3a^2-a-20$

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