Question

Aflati patratul numerelor -2√2; √3+√27; √35:√7+5/√5

Answer 1

(-2 rad 2)^2 = 4*2 = 8
(rad 3 + rad 27)^2 = (rad 3 + 3rad 3)^2 = (4 rad 3)^2 = 16*3 = 48
(rad 35 : rad 7  + 5/ rad 5)^2 = (rad 5 rad 7 : rad 7 + 5 rad 5/ 5)^2 = (rad 5+rad 5)^2 = (2 rad 5)^2 = 4*5 = 20

Answer 2

(-2√2)²=4x2=8
(√3+√27)²=√3²+2√3x√27+√27²=3+2√81+27=3+2x9+27=3+18+27=48
(√35:√7+5/√5)²=(√5+5/√5)²=
√5²+2x√5x5/√5+5²/√5²)=5+10+25/5=5+10+5=20