Question

Resolva no conjunto dos números reais as equações :
a) 2X = 4
b)3X = 9
c)2X = 16
d)5X =625
e)10X =100000
f)12X= 1
g) 5X = 1/125
h)2X = 1/1024
J)(1/27)=1/9

Answer 1

a) 2x = 4
x = 4/2
x = 2
 
b) 3x = 9
x = 9/3
x = 3

c) 2x = 16
x = 16/2
x = 8

d) 5x = 625
x = 625/5
x = 125

e) 10x = 100.000
x = 100.000 / 10
x = 10.000

f) 12x = 1 
x = 1/12

g) 5x = 1/125
x = 1/125 * 1/5
x = 1/625

h) 2x = 1/1024 
x = 1/1024 * 1/2
x = 1/2048

J) (1/27) = 1/9
???

BONS ESTUDOS!

Answer 2

a)$X=\frac{4}{2} = 2$
b)$X=\frac{9}{3}=3$
c)$X=\frac{16}{2}=8$
d)$X=\frac{625}{5}=125$
e)$X=\frac{100000}{10}=10000$
f)$X=\frac{1}{12}$
g)$X= \frac{\frac{1}{125}}{5}=\frac{1}{625}$
h}$X= \frac{\frac{1}{1024}}{2}= \frac{1}{2048}$
j)$X=\frac{\frac{1}{9}}{\frac{1}{27}} = \frac{27}{9} = 3$