Question

Which statement is true about this quadratic equation?

y = –2x^2 + 9x-12

A.There are two real solutions.
B.There is one complex solution.
c.There is one real solution.
D.There are two complex solutions.

Answer 1

There are two real roots because b²>4ac

in the equation, b²= 9² = 81.

4ac = 4×-4×-12= 72