Question

tim x , y :

2 / x - 5 / ^4 + 5 / 2y - 7 / ^ 5 = 0

 

Answer 1

\(2.\left|x-5\right|^4+5.\left|2y-7\right|^5=0\)

\(\Rightarrow2.\left|x-5\right|^4=0\) và \(5.\left|2x-7\right|^5=0\)

+) \(2.\left|x-5\right|^4=0\)

\(\Rightarrow\left|x-5\right|^4=0\)

\(\Rightarrow x-5=0\)

\(\Rightarrow x=5\)

+) \(5.\left|2y-7\right|^5=0\)

\(\Rightarrow\left|2y-7\right|^5=0\)

\(\Rightarrow2y-7=0\)

\(\Rightarrow y=\frac{7}{2}\)

Vậy \(x=5,y=\frac{7}{2}\)