Solve the problem.
-$f ( x ) = - 9 x ^ { 2 } + 4 x + 6$
A) None
B) One
C) Two

Question

Quizplus · Accepted Answer

The equation is a quadratic equation, which typically has two solutions unless the discriminant is zero or negative. The discriminant of a quadratic equation $ax^2 + bx + c = 0$ is given by $b^2 - 4ac$. For this equation, $a = -9$, $b = 4$, and $c = 6$, so the discriminant is $4^2 - 4(-9)(6) = 16 + 216 = 232$, which is positive, indicating two real solutions.

Solve the Problem f(x)=−9x2+4x+6f ( x ) = - 9 x ^ { 2 } + 4 x + 6f(x)=−9x2+4x+6

Solve the Problem $f ( x ) = - 9 x ^ { 2 } + 4 x + 6$