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If alpha,beta, are the zeroes of the pol...

If `alpha,beta`, are the zeroes of the polynomial `ax^2+bx+c`,then `alpha^2+beta^2`=

A

`(b^2-2ac)/a^2`

B

`(a^2-2bc)/b^2`

C

`(b^2+2ac)/a^2`

D

`(a^2+2bc)/b^2`

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