Tolong bantuin No 1 Aja

1.
a)√28= √4×7 = 2√7

b)50√200= 50√100×2 =50×10√2= 500√2

c)√45= √9×5 =3√5

d) √25a²b = 5a√b

e)√32/49 = √16×2/7² = 4/7√2

f)5√2 - 2√2 + 10√2 =15√2 - 2√2 = 13√2

g)2√7 - 2√5+ √7 + 8√5
= 2√7 + √7 - 2√5 + 8√5
= 3√7 + 6√5

h) √2 + 2√8 + √18
= √2 + 2√4×2 + √9×2
= √2+ 4√2 + 3√2
= 8√2

i) √4 + √16 = 2 + 4 = 6

j) 3√6 - 2√9 = 3√6 - 2×3 = 3√6 - 6