Question

Tim x biet :2^x  . (-2)^2x . 8^x = 4⁶

 

Answer 1

kết quả băng *************

Answer 2

2^x . (-2)^2x . 8^x = 4 ^6 

2^x . 2^2x . 8^x = 4^6

2^x . 4^x . 8^x = 4^6

(2.4.8)^x = 4^6

64^x = 4^6

4^3x = 4^6

3x = 6

x = 2

k mk nha

Answer 3

ta có 2^x.(-2)^2x.8^x=4⁶

=> 2^x.2^2x.2^3x=2¹²

=> 2^x+2x+3x=2¹²

=>x+2x+3x=12 => 6x=12 =>x=12:6=2

vậy....