What are the solutions to the following system?

-2x^2+y=-5
y=-3x^2+5

First you have to set the first equation to Y. So it's going to be y=2x^2-5. Then equal both equations to each other, -3x^2+5=2x^2-5. Then add 3x^2 to both sides, 5=5x^2-5. Then add 5 to both sides, 10=5x^2. Then divide by 5, 5=x^2. Finally square root both sides, and you will end up with X= + or - square root of 5. Then plug that for X and solve for Y, which is going to be -10. So your solution is D, the last answer