if α and β are the zeros of the quadratic polynomial p(x)=x^2-k(x+1)-a if (α+1)(β+1)=0 then find a
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Given α and β are zeroes of the polynomial f(x) = ax2 + bx + c
α+ β = -b / a αβ = c / a.
If α and β are zeroes of the quadratic polynomial p(x)=x2-(k-6)x+(2k+1) and α+β= αβ
α+ β = k - 6 and αβ = 2k + 1
Given that α + β = αβ
k - 6 = 2k + 1
∴ k = - 7 .
α+ β = -b / a αβ = c / a.
If α and β are zeroes of the quadratic polynomial p(x)=x2-(k-6)x+(2k+1) and α+β= αβ
α+ β = k - 6 and αβ = 2k + 1
Given that α + β = αβ
k - 6 = 2k + 1
∴ k = - 7 .
vermarimjhim12gmail:
we have to find a not k
sry
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Refer to the photo for answer..dunno if it is correct..should help
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