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If x^3+2x^2-ax-b is exactly divisible by...

If `x^3+2x^2-ax-b` is exactly divisible by `(x^2 -1)`, then the values of a and b are:
यदि `x^3+2x^2-ax-b, (x^2 -1)` से संपूर्ण विभाज्य है, तो a और b के मान ज्ञात करें |

A

a = -1, and b = 2

B

a = 1 and b = -2

C

a = 1 and b = 2

D

a = 2 and b = 2

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