2 2 2*x + x*y + y
2*x^2 + x*y + y^2
/ / ___\\ / / ___\\ | y*\-1 + I*\/ 7 /| | y*\1 + I*\/ 7 /| |x - ----------------|*|x + ---------------| \ 4 / \ 4 /
(x - y*(-1 + i*sqrt(7))/4)*(x + y*(1 + i*sqrt(7))/4)
2 2 y + 2*x + x*y
y^2 + 2*x^2 + x*y
2 y + x*(y + 2*x)
y^2 + x*(y + 2*x)
y^2 + 2.0*x^2 + x*y