Question

tìm x căn 25x=35

Answer 1

\(35^2\)= 1225

x = 1225:25 = 49

Vậy x = 49

Answer 2

căn 25 x =35 

25 x =35^2

suyra x=49

Answer 3

Ta có : \(\sqrt{25.x}=35\)

\(\Rightarrow\sqrt{5^2.x}=35\)

\(\Rightarrow\sqrt{5^2}.\sqrt{x}=35\)

\(\Rightarrow\sqrt{x}=35:5\)

\(\Rightarrow\sqrt{x}=7\)

\(\Rightarrow\sqrt{x}=7\) hoặc \(-\sqrt{x}=-7\)

\(\Rightarrow x=49\) hoặc  \(x=-49\)