\(\sqrt{2-x}=2-\sqrt[3]{x}\)
Dat \(\sqrt[3]{x}=a\)
=> x=a3
pt<=> \(\sqrt{2-a^3}=2-a\)
<=> 2-a3=(2-a)2
<=> 2-a3=4-4a+a2
<=> a3+a2-4a+2=0
<=> a3-a2+2a2-2a-2a+2=0
<=> (a-1)(a2+2a-2)=0
<=> a-1=0 hoac a2+2a-2=0
<=> a=1 hoac (a+1)2=3 => a=\(\pm\sqrt{3}-1\)
Ban tu thay a vao giai ra x nha