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Question

What must be added to x4+2x32x2+x1 . So that result is exactly divisible by x2+x2 ?

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Solution

x4+2x32x2+x1=x4+x3+x32x2+x2x2+x+1=(x4+x32x2)+(x3+x22x)(x2+x2)+(4x3)=x2(x2+x2)+x(x2+x2)(x2+x2)+(4x3)
Here we have to remove the last bracket terms 4x3 so that the above expression is divisible by the expression given in question
So we have to add 34x to make the expression divisible

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