alpha, beta are roots of quadratic equat...

`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

`3/5`

B

`4/5`

C

`24/25`

D

`12/13`

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