Question

Answer 1

\(2^{x+3}.16=64\\ 2^{x+3}=4\\ 2^{x+3}=2^2\\ x+3=2\\ x=-1\)

Answer 2

\(2^{x+3}\cdot4^2=64\)

\(2^{x+3}\cdot16=64\)

\(2^{x+3}=4\)

\(2^{x+3}=2^2\)

\(x+3=2\)

\(x=-1\)

Answer 3

\(2^{x+3}.4^2=64\)

\(\Rightarrow2^{x+3}.4^2=4^3\)

\(\Rightarrow2^{x+3}=4^3:4^2\)

\(\Rightarrow2^{x+3}=4\)

\(\Rightarrow2^{x+3}=2^2\)

\(\Rightarrow x+3=2\)

\(\Rightarrow x=2-3\)

\(\Rightarrow x=-1\)

Answer 4

2^x+3 . 4² = 64

2^x+3 . 16 = 64

2^x+3        = 64 : 16

2^x+3        = 4

2^x+3        = 2²

=> x + 3  = 2

     x        = 2 - 3

     x        = -1

Answer 5

\(\Leftrightarrow2^{x+3}=4\)

=>x+3=2

hay x=-1