Question

resposta , de todas atividade postada

Answer 1

7)

a)

(-46):(-2)=23

b)

(-9)²-(-7)²

81-49 =32

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8)

a)

=25/56

b)

7/6-2/6+15/6

(7-2+15)/6=20/6=10/3

c)

(-11/7) *(3/2) =-33/14

d)

(8/13)²=64/169

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9)

=2

b)

√(2*7*13)

=√182

c)

√(57/3) =√19

d)

[x^(1/4)]^(1/7)

=x^(1/28)

e)

(5^(1/2))^(1/2))^(1/2)

=5^(1/2*1/2*1/2)

=5^(1/8)

f)

=√19

g)

(7^(1/5)^5

=7^(5/5)

=7

h)

√3*(1+7-11)

=-3√3