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Question

Check whether p(x) is multiple of g(x) or not
(i) p(x)=x3+27x28x+18, g(x)=x1
(ii) p(x)=22x352x2+72,g(x)=x+1

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Solution

Part (1),

Consider the given polynomial p(x)=x3+27x28x+18 and g(x)=x1

Let put g(x)=x1 then

x1=0

x=1

Put and get value of

p(x)=(1)3+27(1)28(1)+18

p(x)=1+278+18

p(x)=380

Because p(x)0

Hence, p(x) is not multiple of g(x).

Part (2),

Consider the given polynomial p(x)=22x352x2+72 and g(x)=x+1

Let put g(x)=x+1 then

x+1=0

x=1

Put and get value of

p(x)=22(1)352(1)2+72

p(x)=22+52+72

p(x)=1020

Because p(x)0

Hence, p(x) is not multiple of g(x).

Hence, this is the complete solution.


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