Question

1)Calcule
A)6√5-√20
B)6√3+√75
C)√75+5√27
D)3√98-√50

Answer 1

1)Calcule

A)6√5-√20

6√5-2√5

4√5

B)6√3+√75

6√3+5√3

11√3

C)√75+5√27

5√3+5.3√3

5√3+15√3

20√3

D)3√98-√50

3.7√2-5√2

21√2-5√2

16√2

Achando as raízes

20|2

10|2

5|5 = √2².5 = 2√5

1

75|3

25|5

5|5 = √3.5² = 5√3

1

27|3

9|3

3|3 = √3².3 = 3√3

1

98|2

49|7

7|7 = √2.7² = 7√2

1

50|2

25|5

5|5 = √2.5² = 5√2

1

❤️ Prontinho ❤️

15/07/22

Answer 2

Resposta:

A) 4√5 | B) 11√3 | C) 20√3 | D) 16√2

Explicação passo a passo:

A) 6√5 - √20 = 6√5 - √4×5 = 6√5 - √2²×5 = 6√5 - 2√5 = 4√5

B) 6√3 + √75 = 6√3 + √25×3 = 6√3 + √5²×3 = 6√3 + 5√3 = 11√3

C) √75 + 5√27 = √25×3 + 5√9×3 = √5²×3 + 5√3²×3 = 5√3 + 5×3√3 = 5√3 + 15√3 = 20√3

D) 3√98 - √50 = 3√49×2 - √25×2 = 3√7²×2 - √5²×2 = 3×7√2 - 5√2 = 21√2 - 5√2 = 16√2