Question

How do you solve `x^2 + y^2 = 32` and `y - x = 0`?

Answer 1

`x_1=4: y_1=4; x_2=-4; y_2=-4`

Explanation:

`y-x=0 rArr y=x`

`x^2+x^2=32; 2x^2=32: x^2=16; x_1=4; x_2=-4`