Question

mn giúp mk với

Answer 1

\(a,M=\left[\dfrac{\sqrt{x}\left(\sqrt{x}+1\right)}{\sqrt{x}+1}+1\right]\left[\dfrac{\sqrt{x}\left(\sqrt{x}-1\right)}{\sqrt{x}-1}-1\right]\\ M=\left(\sqrt{x}+1\right)\left(\sqrt{x}-1\right)=x-1\\ b,x=16\Leftrightarrow M=16-1=15\)

Answer 2

a: \(M=\left(\sqrt{x}+1\right)\left(\sqrt{x}-1\right)=x-1\)

b: =16-1=15