Question

giải các phương trình sau 

\(\sqrt{x}=\sqrt{2-2x},\sqrt{5-2x}=\sqrt{36},\)

Answer 1

a: =>x=2-2x

=>3x=2

hay x=2/3

b: =>5-2x=36

=>2x=-31

hay x=-31/2

Answer 2

\(\sqrt{x}=\sqrt{2-2x}\)

\(x=2-2x\)

`(2x-x)=2`

`3x=2`

`x=2:3`

`x=2/3`

____________________________

\(\sqrt{5-2x}=\sqrt{36}\)

\(\Leftrightarrow5-2x=36\)

`2x=5-36`

`2x=-31`

`x=-31:2`

`x=-31/2`