Question

2.2^x =2⁸

Answer 1

2^7

Answer 2

2^x+1 = 2⁸

=> x + 1 = 8

=> x = 8 - 1 = 7

Answer 3

C1

\(2.2^x=2^8\)

\(2^x=2^7\)

\(\Rightarrow x=7\)

C2:

\(2.2^x=2^8\)

\(\Rightarrow1+x=8\)

  \(\Rightarrow x=7\)

Answer 4

x=7

Answer 5

2^x+1 = 2⁸

=> x + 1 = 8

=> x = 8 - 1 = 7

Vậy x=7

Answer 6

C1

2.2 x = 2 8

2 x = 2 7

⇒ x = 7

C2:

2.2 x = 2 8

⇒ 1 + x = 8

⇒ x = 7