If the zeros of the quadratic polynomial$ax^2+bx+c$,c≠ 0 are equal , then :

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If the zeros of the quadratic polynomial $ax^2+bx+c$ ,c≠ 0 are equal , then :

Ac and b have opposite signs

Bc and a have opposite signs

Cc and b have same signs

Dc and a have same signs

Answer:

$b^2-4ac=0$

$b^2=4ac$

$\implies$ either a and c is positive or a and c is negative

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