Thread: Solving simultaneous equations using substitution method.

I need help with the following problem. I forgot how to do these and this assignment is due tomorrow. Any help would be greatly appreciated!

Solve by substitution method:

x + y = 2
y = x^2 - 4

Substitute the second one into the first one. Thus, you get :







Now solve for using the factorization method or the quadratic formula, then substitute back the 's into the first equation to find the 's

Thanks alot. Got it now. =]