Question

quanto vale x?
c)x²=49
d)x²=16
e)x²=36
f)x²=81
g)x²=100
h)x²=400​​

Answer 1

Explicação passo-a-passo:

x²=49

x=√49

x=7

x²=16

x=√16

x=4

x²=36

x=√36

x=6

x²=81

x=√81

x=9

x²=100

x²=√100

x=10

x²=400

x²=√400

x= 20