Question

Calcule:

a) √25 + √49 = d) √64 − √100 + √4 =

b) √9 − √49 = f) √169 + √81 − √196 =

c) √144 + √121 = e) −√36 + √9 + √4 =

​

Answer 1

A)

5 + 7

12

B)

3 - 7

-4

C)

12 + 11

23

D)

8 - 10 + 2

0

F)

13 + 9 - 14

8

E)

- 6   + 3 + 2

-1

Explicação:

5² = 25    logo √25 = 5

Answer 2

Resposta:

a) 12

b) -4

c) 23

d) 0

f) 8

e) -1

Explicação passo-a-passo:

a) $\sqrt{25} = 5, \sqrt{49} = 7 => 7 + 5= 12$

b) $\sqrt{9} = 3, \sqrt{49} =7 => 3 - 7 = -4$

c) $\sqrt{144} = 12, \sqrt{121} = 11 => 12 + 11 = 23$

d) $\sqrt{64} = 8, \sqrt{100} = 10, \sqrt{4} = 2 => 8 - 10 + 2 = 0$

f) $\sqrt{169} = 13, \sqrt{81} = 9, \sqrt{196} = 14 => 13 + 9 - 16 = 8$

e) $\sqrt{36} = 6, \sqrt{9} = 3, \sqrt{4} = 2 => -6 + 3 + 2 = -1$