the value of x which complies with √8^3-x = 4.2^1-2x is... a. -4 b. -3 c. -2 d. 3 e. 4

jawaB

(8)^{(3-x)/2} = 4. 2^(1-2x)

(2)^{3/2( 3- x)} = 2^2. 2^1. 2^(-2x)

3/2 ( 3 - x) = 2+1- 2x

3/2 ( 3 - x) = 3 - 2x

3(3 - x ) = 2(3 - 2x)

9 - 3x = 6 - 4x

4x - 3x = 6 - 9

x = - 3  

√8^3-x = 4.2^1-2x
(2)^3/2( 3- x) = 2^2+1-2x
3/2 ( 3 - x) = 2+1- 2x
3/2 ( 3 - x) = 3 - 2x
3(3 - x ) = 2(3 - 2x)
9 - 3x = 6 - 4x
x = - 3
jawaban : b