nilai x dari akar 8 pangkat x-5 = 4 pangkat 4+2x

8 ^(x-5) = 4 ^(4+2x)
Samakan bilangan pokok
A^b = A^c
.b =c
2^((3(x-5)) = 2^((2(4+2x))
((3(x-5)) = ((2(4+2x))
3x-15 =8+4x
3x-4x = 8+15
-x = 23
.x =-23

√8∧(x-5) = 4∧(4+2x)
(2∧3/2)∧ (x-5) = (2∧2)∧(4+2x)
2∧(3/2 x - 15/2) = 2∧(8+4x)


3/2 x - 15/2 = 8+4x
3/2 x - 4x = 8+15/2
-2 1/2 x = 31/2
-5/2 x = 31/2
x = -31/5
x = -6 1/5