Solve the system of equations by using the substitution method.

x^2+y^2=25
y-5= -x^2

Question

Solve the system of equations by using the substitution method.

x^2+y^2=25
y-5= -x^2

arbershabani97 · Answer

x^2+y^2=25
x^2+y=5
then
y^2-y+20=0   (are you sure that you wrote it correctly) because you need to use quadratic formula there)

anonymous · Answer

Okay I got that far and then I was lost. Probably because nowhere in the lesson does it say to use quadratic formula..

arbershabani97 · Answer

well probably it should've been x^2+y^2=-25 and it would make sense

anonymous · Answer

I know but its a positive. I copied the problem directly from the page.

arbershabani97 · Answer

either technical problem, or given in purpose, but because you didn't learn the quadratic formula, then you'll probably learn it later, so you won't need it now, so don't worry about it

radar · Answer

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