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`alpha, beta` are roots of quadratic equation `ax^2+bx+c=0`. Then `(alpha+beta)`=______ a)`-b/a` b)`b/a` c)`-c/a` d)`c/a`

A

`-b/a`

B

`b/a`

C

`-c/a`

D

`c/a`

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CHETANA PUBLICATION-Quadratic Equations-EXERCISE
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  15. For quadratic equation the product of the roots alpha and beta=…………..a...

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  16. Write the formula: alpha^3+beta^3=…………….a)(alpha+beta)^3-3alphabeta(al...

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  17. If one root of quadratic equation is 5+sqrt 5,then the product of root...

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  18. If x=9 is one root of the quadratic equation x^2-11x+k=0, then find th...

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