Question

How would u do this w/o plugging in the numbers?

Answer 1

First isolate y for each equation so that y = x^2 + 3 and y = 2x^2 + 2 now set those equal to eachother and solve for x, 

x^2 + 3 = 2x^2 + 2
= √x^2 = √1
x is +- 1

then plug in x for one of the original equations y = 1^2 + 3 = 4

x = +-1
y = 4