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Question

The value of m if 2y3 + my2 + 11y + m + 3 is exactly divisible by 2y - 1 is ________


A

7

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B

- 7

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C

- 1

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D

1

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Solution

The correct option is (D) - 7

Given, 2y3 + m(y2) + 11y + m + 3 is exactly divisible by 2y 1

since 2y-1=0

2y=1

y=12

Putting y= 12 in 2y3 + my2 + 11y + m + 3, we get

2(12)3 + m(12)2 + 11(12) + m + 3 = 0

m = 7

Hence, the value of m is -7.


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