The roots of the equation $ax^2+ bx + c = 0$ are equal if:

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A $b^2=4ac$

B $b^2>4ac$

C $b^2<4ac$

D $b=4ac$

Answer:

b^2=4ac

$b^2=4ac$

Related Questions:

Find the degree of the polynomial p(x)q(x); $p(x)=2x^2+4x+2$ , $q(x)=4x+6$

6(x ^ 3 - 2x ^ 2 + 3x) - (x ^ 3 + 2x - 3)

6p^2 -5p-6 = 0.