Question

Tolong bantu saya, sama cara nya juga

Answer 1

1)
3^(-3(3x-7)) = 3^(1/2(2-2x))
-3(3x-7) = 1/2(2-2x)
-9x +21 = 1 -x
-10 x = -20
x=2
.
2)
7'log (x-5)(x+1) = 7'log 7 dengan x > 5
x^2- 4x -5 -7 = 0
x^2 - 4x -12 =0
(x-6)(x+2) = 0
x= - 2 TM krn < 5)
x =6
.
3)
log(x^2)^3 - log x^5 = log 100
x^6 /x^5 = 100
x = 100