Question

Simplifique os radicais:

a) √98

b) √27

c) √72

Answer 1

a) 7√2

98 | 2
49 | 7
7   | 7
1          98 = 2 . 7²

√98 = √(2 . 7²) = 7√2

b) 3√3

27 | 3
9   | 3
3   | 3
1         27 = 3² . 3

√27 = √(3² . 3) = 3√3

c) 6√2

72 | 2
36 | 2
18 | 2
9   | 3
3   | 3
1         72 = 2² . 2 . 3² = 6² . 2

√72 = √(6² . 2) = 6√2