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Question (31)

QN0019189

k = 10 gives k² + 2k =

(A) 100
(B) 110
(C) 120
(D) 140

Correct Answer: C

Explanation:

100 + 20

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Question (32)

QN0019190

(k + 1)² − 1 equals:

(A) k² + 2k
(B) k² − 1
(C) k² + k
(D) 2k²

Correct Answer: A

Explanation:

Expansion

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Question (33)

QN0019191

k(k + 2) + k equals:

(A) k² + k
(B) k² + 2k
(C) 2k² + k
(D) k² − 2k

Correct Answer: B

Explanation:

Simplification

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Question (34)

QN0019192

k² + 2k is best described as:

(A) Linear
(B) Quadratic
(C) Constant
(D) Fraction

Correct Answer: B

Explanation:

Quadratic expression

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