Question

Kakak tolong kerjakan kak gagal paham. soalnya gampang . jawabannya yg susah

Answer 1

Verified answer

2.3^(2x+1)+3^x=5
2.3^(2x).3+3^x=5
6.(3^x)²+(3^x)-5=0 mis(3^x)= a
6a²+a-5=0
(6a-5)(a+1)
6a=5
a=5/6
3^x=5/6
x= 3log5/6
a=-1
3^x=-1
x=3log-1 (tdk memenuhi)
jadi x= 3log5/6