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mathprep
Section02MultiplyingTest
v16

Test Section02MultiplyingTest

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Problem 1.

(1 point)

$-7(5x-8y) =$

A. $35x-56y$
B. $-35x+8y$
C. $-35x-56y$
D. $-35x-8y$
E. $-35x+56y$

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Problem 2.

(1 point)

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

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

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Problem 3.

(1 point)

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

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

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Problem 4.

(1 point)

$K(A-r)r^2 =$

A. $-Kr + Ar^2$
B. $KA r^2 - Kr$
C. $A - Kr^3$
D. $KA - r^3$
E. $KAr^2 - Kr^3$

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Problem 5.

(1 point)

$(y+1)(z+3) =$

A. $yz+3$
B. $yz+z+3$
C. $yz+3y+z+4$
D. $yz+4$
E. $yz+3y+z+3$

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Problem 6.

(1 point)

$-(p^3-3p)(2\sqrt p) =$

A. $-2p^{5/2}+6p^{3/2}$
B. $-2p^{7/2}-6p^{3/2}$
C. $-2p^{5/2}-3p^{3/2}$
D. $-2p^{7/2}+6p^{3/2}$
E. $-2p^{3/2}+6p^{1/2}$

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Problem 7.

(1 point)

$-4(v+2)+2(4-v) =$

A. $-8v+2$
B. $2v-16$
C. $-6v+10$
D. $-6v+16$
E. $-6v$

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Problem 8.

(1 point)

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

A. $x^4-8x+16$
B. $x^4-8x-16$
C. $2x^2-16$
D. $x^2-16$
E. $x^4-16$

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Problem 9.

(1 point)

$(A^2-B^2)^2 =$

A. $A^4 - 2A^2 B^2 - B^4$
B. $A^4 - A^2 B^2 + B^4$
C. $A^4 + B^4$
D. $A^4 - 2A^2 B^2 + B^4$
E. $A^4 - B^4$

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Problem 10.

(1 point)

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

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

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