5. Tentukan nilal X dari persamaan bilangan berikut :a. 64 = 21xb. (-27) = (-3)x​

Jawaban:

)

4^2x-3 = 64

(4)^2x-3 = (4)^3

2x-3 = 3

2x = 3+3

2x = 6

x = 6/2

x = 3

b)

(1/9)^4x-5 = 27

(3^-2)^4x-5 = (3)^3

(3)^-8x+10 = (3)^3

-8x+10 = 3

-8x = 3-10

-8x = -7

x = 7/8

c)

25^3x = 125^4x-2

(5²)^3x = (5^3)^4x-2

(5)^6x = (5)^12x-6

6x = 12x-6

6x-12x = -6

-6x = -6

x =-6/-6

x = 1

Simak lebih lanjut di Brainly.co.id – brainly.co.id/tugas/4748388#readmore