x^2-xy+3y^2=15 x-y=2
Make the equation X:
x = y + 2
Plug in and Solve:
(y+2)^2 - y(y+2) + 3(y+2)^2 = 15
y = (√46) - 7/3
y = - 7 + (√46)/3
I believe that it is 30° if you round it to the nearest 10 but if it is to the nearest hundredth I think its 100?
