You can put this solution on YOUR website! If alpha and beta are the zeroes of 2xsquare+5x-10 then what is the value of alpha*beta?
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2x^2 + 5x - 10 = 0
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Ans: [-b+sqrt(b^2-4ac)]/(2a) * [-b-sqrt(b^2-4ac)]/(2a)
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= [b^2 - (b^2-4ac)]/4a^2
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= [b^2-b^2+4ac]/4a^2
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= 4ac/4a^2
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= c/a
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Ans: alpha*beta = c/a = -10/2 = -5
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Cheers,
Stan H.
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