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Q.

If x2+px+q is exactly divisible by x+2  and leaves remainder 5  when divided by x-3 then p-q  is

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a

0

b

-4

c

4

d

1

answer is C.

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Detailed Solution

p(x)=x2+px+q

p(-2)=0

4-2p+q=0

-2p+q=-4

p(3)=5

9+3p+q=5

3p+q=-4

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p=0 then q=-4

p-q=0+4=4

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