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The roots of a quadratic equation ax^2- ...

The roots of a quadratic equation `ax^2- bx + c = 0, a ne 0` are

A

`(-b+sqrt(b^2-4ac))/(2a),(-b+sqrt(b^2+4ac))/(2a)`

B

`(-b+sqrt(b^2-4ac))/(2a),(-b-sqrt(b^2+4ac))/(2a)`

C

`(b+sqrt(b^2-4ac))/(2a),(b-sqrt(b^2-4ac))/(2a)`

D

`(-b+sqrt(b^2-4ac))/(2a),(-b-sqrt(b^2-4ac))/(2a)`

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