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

Correct Answer: b + 2c = 2a + d

Explanation:

If (x+2) is the HCF of x2 + ax + b and x2 + cx + d.
Then, (-2)2 -2a +b = (-2)2 -2c + d
b + 2c = 2a + d


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