Question

Resolva as equações exponenciais
a)2.3x-2=162
b)3.5x-1=75
c)5.2x2-4=160
d)10.2x+3=10

Answer 1

a)3x=162/2+2
3x=81+2
3x=83
x=83/3
x=27,666...

b)3.5x-1=75
5x=75/3+1
5x=25+1
5x=26
x=26/5
x=5,2

c)5.2x2-4=160
2x=160/5+2
2x=32+2
2x=34
x=34/2
x=17

d)10.2x+3=10
2x=10/10-3
2x=1-3
2x=-2
x=-2/2
x=-1