tolong jawab pake caranya yah...Terimakssih

yg no.1 aja y.no.2 n 3 gk keliatan d hpQ.
1.akar 1/5 + akar 45
=akar 1/25x5 + akar 9x5
=1/5akar5+3akar5
=3 1/5 akar5