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vivado [14]
2 years ago
6

HELPP URGENT and please explain

Mathematics
1 answer:
kogti [31]2 years ago
8 0

<u>Answer:</u>

A) There are two complex solutions.

<u>Step-by-step explanation:</u>

To know how many solutions a quadratic equation has, calculate the discriminant of the equation.

discriminant = b² - 4ac              

    where a = coefficient of x²

                b = coefficient of x

                c = constant of equation

if b² - 4ac > 0 , then equation has 2 real roots

if b² - 4ac = 0 , then equation has 1 real, repeated root

if b² - 4ac < 0 , then equation has 2 complex roots

In this case, discriminant = 9² - 4(-2)(-12)

                                          = -15

As -15 < 0, equation has 2 complex roots.

       

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