Question

quanto vale x? a) x2=9

b)x2=25

c)x2=49

d)x2=81



3) determine a raiz quadrada

a)v9=

b)v25=

c)v0=

d)v64=

e)v16=

f)v81=

g)v1=

h)v100=



4)resolva as expressões abaixo

a)v16+v36=

b)v25+v9=

c)v49-v4=

d)v36-v1=

e)v9+v100=

f)v4×v9=



​

Answer 1

Resposta:

a)

\sqrt{9} = \sqrt{ {3}^{2} } = 3

9

=

3

2

=3

b)

\sqrt{16} = \sqrt{ {4}^{2} } = 4

16

=

4

2

=4

c)

\sqrt{25} = \sqrt{ {5}^{2} } = 5

25

=

5

2

=5

d)

\sqrt{81} = \sqrt{ {9}^{2} } = 9

81

=

9

2

=9

e)

\sqrt{0} = \sqrt{ {0}^{2} } = 0

0

=

0

2

=0

f)

\sqrt{1} = \sqrt{ {1}^{2} } = 1

1

=

1

2

=1

g)

\sqrt{64} = \sqrt{ {8}^{2} } = 8

64

=

8

2

=8

h)

\sqrt{100} = \sqrt{ {10}^{2} } = 10

100

=

10

2

=10

2. a)

\sqrt{16} + \sqrt{36} = 4 + 6 = 10

16

+

36

=4+6=10

b)

\sqrt{25} + 19 = 5 + 19 = 24

25

+19=5+19=24

c)

\sqrt{49} - \sqrt{4} = 7 - 2 = 5

49

−

4

=7−2=5

d)

\sqrt{36} - \sqrt{1} = 6 - 1 = 5

36

−

1

=6−1=5

e)

\sqrt{9} + \sqrt{100} = 3 + 10 = 13

9

+

100

=3+10=13

f)

\sqrt{4} \times \sqrt{9} = \sqrt{36} = 6

4

×

9

=

36

=6

se n entendeu fala que explico melhor