Answer:
-3 times -2 is 6 not -6
Step-by-step explanation:
Thats where he messed up
To use the elimination method, you have to create variables that have the same coefficient, then you can eliminate them.
The answer is
2)40
3)y=3\2
The formula for the discriminant is the square root of b^2 - 4ac
8x^2+18x-5= 0
a = 8, b=18, c= -5
Square root of 324 +160
Square root of 484 = 22 The discriminant is 22