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Question

If both the zeroes of a quadratic polynomial ax2+bx+c are equal and opposite in sign, find b.

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Solution

Let p and p are two zeroes of the quadratic polynomial which are equal and opposite sign.

We know that-

Sum of the zeroes =ba
So,

p+(p)=ba
0=ba
Therefore,
b=0

Hence, value of b is 0


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