Question

tìm x,y thỏa mãn x^2+2^y=11

Answer 1

\(x^2+2^y=11\)

\(\Leftrightarrow x^2+2^y=3^2+2^1\)

\(\Rightarrow x=3\)

\(\Rightarrow y=1\)

Answer 2

Ta có : \(x^2+2^y=11\)

            \(x^2+2^y=3^2+2^1\)

\(\Leftrightarrow\) \(x^2=3^2\Rightarrow x=3\)

\(\Leftrightarrow2^y=2^1\Rightarrow y=1\)

Vậy \(x=3;y=1\)

 

Answer 3

 x² + 2^y = 11

=> 11 = 3² + 2¹

=> x² = 3²

=> 2^y = 2¹

Vậy: x = 3; y = 1