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If a and b `(ne 0)` are the roots of the quadratic `x^(2)+ax+b=0` then the least value of `x^(2)+ax+b (x in R)` is

A

`2//3`

B

`9//4`

C

`-9//4`

D

1

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The correct Answer is:
C
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ML KHANNA-THEORY OF QUADRATIC EQUATIONS -Problem Set - 2
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  11. If (ax^(2)+c) y+(dx^(2)+c')=0 and x is a rational function of y and a...

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  14. If alpha,betaare the roots of x^2+px+q=0 and alpha^n,beta^n are the ro...

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