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Question

Condition for ax2 + bx+ c = 0 to be a quadratic equation is



A

a≥ 0; a, b, c are real

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B

a< 0; a, b, c are unreal  

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C

a≤ 0; a, b, c are real

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D

a≠ 0; a, b, c are real.

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Solution

The correct option is D

a≠ 0; a, b, c are real.


ax2 + bx + c = 0;The coefficient  of x2should  not be equal to zero, i.e. a0

So now a, b, c is real and a0, which is condition for the given equation to be quadratic.


Mathematics

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