if α and β are the zeros of the polynomial f(x)=5x^2+4x−9 then evaluate the following: alpha^2-beta^2
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l am so so so so so sorry. l know the answer but it's wrong I think. because of me no one have to study wrong answer that is the reason. l am so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so sorry.
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