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When x= C3, the expression C2x 2 + 3x C 7 =:
When x= C3, the expression C2x 2 + 3x C 7 =:
A . C34
B . C27
C . C16
D . C10
E . 2
Answer: A
Explanation:
Substitute C3 for x:
C2 × (C3) 2 + 3 × (C3) C 7 = C 2 × 9 C 9 C 7 = C18 C 16 = C34
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