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Question

find the quadratic equation, if p and q are the roots of the equation x2 - px + q =0 when p= 1 and q= -2.

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Solution

Dear student
Since p and q are the roots of the equation x2-px+q=0where p=1 and q=-2 Sum of roots = p+q=1+-2=-1 And product of roots=1×-2=-2So required quadratic eqaution =kx2-sum of rootsx+product of roots=kx2+x-2 where k is a non-zero constant.
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