1.

If (x+2) is the HCF of x2 + ax + b and x2 + cx + d , then which one of the following is correct ?

A. a + c = b + d
B. 2a + b = 2c + d
C. b + 2c = 2a + d
D. b - 2c = 2a - d
Answer» D. b - 2c = 2a - d


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