(\sqrt2+\sqrt18)^2 - 30 + (1-\sqrt2)^2+(1+\sqrt2)^2=8
(√2+√18)² - 30 + (1-√2)²+(1+√2)²=2+2√36+18-30+1-2√2+2+1+2√2+2=-4+2*6=-4+12=8
(\sqrt2+\sqrt18)^2 - 30 + (1-\sqrt2)^2+(1+\sqrt2)^2=8
(√2+√18)² - 30 + (1-√2)²+(1+√2)²=2+2√36+18-30+1-2√2+2+1+2√2+2=-4+2*6=-4+12=8