Question

2 mũ x  trừ mười 5 = 17 tìm x 

Answer 1

\(2^x-10=17\)

\(2^x=17-10\)

\(2^x=7\)

\(\Rightarrow x\in\left\{rỗng\right\}\)rỗng nha 

Answer 2

\(2^x-15=17\\ 2^x=17-15\\ 2^x=2\\ x=2:2\\ x=1\)

Answer 3

2^x = 17 + 15

2^x = 32

2^x = 2 x 2 x 2 x 2 x 2

vay x = 5

Answer 4

\(2^x-15=17\)

\(\Rightarrow2^x=17+15=32\)

\(\Rightarrow2^x=2^5\)

\(\Rightarrow x=5\)

Chinh xac 100%