(√2-3√5)^2+(√2+3√5)^2

Question

(√2-3√5)^2+(√2+3√5)^2

Answer 1

(√2-3√5)^2+(√2+3√5)^2=2*((√2)^2+(3√5)^2)=2*(2+9*5)=4+90=94

Answer 2

(√2-3√5)²+(√2+3√5)²=(2-6√10+45)+(2+6√10+45)=2-6√10+45+2+6√10+45= 94