Find the discriminant of 3x^2-10=-2

Step-by-step explanation:

You must add 2 to both sides of the equation:

You can find the discriminant of the quadratic equation given in the problem with the formula shown below:

Based on the given equation, you have that:

Susbstitute values. Then you obtain:

fdvs

step-by-step explanation: vsfdvsfvd

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15