1.

If ax2 + bx + c = 0, a ≠ 0, has equal roots then c is equal to is

Answer»

Correct option: (b) b2/4a

Explanation: 

If ax2 + bx + c = 0, a ≠ 0, has equal roots, then b2 - 4ac = 0.

Hence, c = b2/4a.



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