C
chaizo1234567
cau11
4\sqrt[n]{A}(x+2)+\sqrt[n]{A}(22-3x)=x2+8 dk -2\leqx\leq22/3
\Leftrightarrow4(\sqrt[n]{A}(x+2)-2)+\sqrt[n]{A}(22-3x)-4=x2-4
\Leftrightarrow(x-2)(4
\sqrt[n]{A}(x+2)+2)+1
\sqrt[n]{A}(22-3x)+4)-x-2))=0
nhan thay ve dai luon khac o\Rightarrowx=2
4\sqrt[n]{A}(x+2)+\sqrt[n]{A}(22-3x)=x2+8 dk -2\leqx\leq22/3
\Leftrightarrow4(\sqrt[n]{A}(x+2)-2)+\sqrt[n]{A}(22-3x)-4=x2-4
\Leftrightarrow(x-2)(4
nhan thay ve dai luon khac o\Rightarrowx=2