Question

Tìm số tự nhiên x

1)2^x=256

2)3^5x-1=39

3)3⁵=243

4) (2x-1)²=169

5)x¹⁰:x⁶=81

6)4x³=108

7)x⁵=x

8) (3x-2)⁶=(3x-2)⁵

Answer 1

1: =>2^x=2^8

=>x=8

6: =>x^3=27

=>x=3

7: =>x^5-x=0

=>x(x-1)(x+1)=0

=>\(x\in\left\{0;1;-1\right\}\)

8: =>(3x-2)^5*(3x-3)=0

=>x=1;x=2/3