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If α and β are the zeros of x^2+20x-80, then the value of α+β is _______(a) -15(b) -5(c) -10(d) -20I had been asked this question in unit test.The origin of the question is Zeros and Coefficients of Polynomial topic in portion Polynomials of Mathematics – Class 10

Answer» RIGHT choice is (d) -20

Explanation: α and β are the ZEROS of X^2+20x-80.

Sum of zeros or α+β = \(\frac {-COEFFICIENT \, of \, x}{coefficient \, of \, x^2} = \frac {-20}{1}\) = -20


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