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Question

Find the value of a if the expression $3 x^{2} + a x - 7$ is divisible by (x - 1)
4
10
-4
-10

A

-4

B

4

C

10

D

-10

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Solution

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As $3 x^{2} + a x - 7$ is divisible by $(x - 1)$ ; $x = 1$ will satisfy the equation $3 x^{2} + a x - 7 = 0$

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