A quadratic equation ax2+bx+c=0 has two distinct real roots, if
A
a=0
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B
b2−4ac=0
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C
b2−4ac<0
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D
b2−4ac>0
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Solution
The correct option is Db2−4ac>0 If a=0, it becomes linear equation. If b2−4ac=0, then there will be real and equal roots. If b2−4ac<0, then the roots will be unreal. Only if b2−4ac>0, we will get two real distinct roots. Option D is correct!