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Question (1)

QN0019079

Which identity represents the square of a sum?

(A) ((a-b)^2=a^2-b^2)
(B) ((a+b)^2=a^2+2ab+b^2)
(C) ((a+b)^2=a^2+b^2)
(D) ((a+b)^2=2ab)

Correct Answer: B

Explanation:

Standard identity for the square of a sum.

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Question (2)

QN0019080

Which identity represents the square of a difference?

(A) ((a-b)^2=a^2-2ab+b^2)
(B) ((a-b)^2=a^2-b^2)
(C) ((a-b)^2=a^2+2ab+b^2)
(D) ((a-b)^2=2ab)

Correct Answer: A

Explanation:

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Question (3)

QN0019081

The identity ((a+b)(a-b)) is equal to

(A) (a^2+b^2)
(B) (a^2+2ab+b^2)
(C) (a^2-b^2)
(D) (2ab)

Correct Answer: C

Explanation:

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Question (4)

QN0019082

In the identity ((a+b)^2=a^2+2ab+b^2), the middle term is

(A) (ab)
(B) (2ab)
(C) (a+b)
(D) (2a+2b)

Correct Answer: B

Explanation:

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Question (5)

QN0019083

Which special case comes from multiplying ((a+b)) by itself?

(A) Difference of squares
(B) Square of a difference
(C) Square of a sum
(D) Product of unequal binomials

Correct Answer: C

Explanation:

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Question (6)

QN0019084

The expression ((a-b)(a+b)) is known as

(A) Square of a sum
(B) Square of a difference
(C) Difference of two squares
(D) Sum of two squares

Correct Answer: C

Explanation:

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Question (7)

QN0019085

Expand ((x+5)^2).

(A) (x^2+25)
(B) (x^2+10x+25)
(C) (x^2+5x+25)
(D) (2x^2+25)

Correct Answer: B

Explanation:

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Question (8)

QN0019086

Expand ((y-4)^2).

(A) (y^2-16)
(B) (y^2+8y+16)
(C) (y^2-8y+16)
(D) (y^2-4y+16)

Correct Answer: C

Explanation:

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Question (9)

QN0019087

Find ((3a+2)^2).

(A) (9a^2+12a+4)
(B) (9a^2+4)
(C) (6a^2+12a+4)
(D) (9a^2+6a+4)

Correct Answer: A

Explanation:

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Question (10)

QN0019088

Find ((5p-1)^2).

(A) (25p^2-1)
(B) (25p^2-10p+1)
(C) (25p^2+10p+1)
(D) (5p^2-10p+1)

Correct Answer: B

Explanation:

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