\(x^{11}:\left(-x\right)^{10}\)
\(=x^{11}:x^{10}\)
\(=x\)
Ta có : x11 : ( -x ) 10
= x11 : x10
= x10 .x : x10
= x
\(x^{11}:\left(-x\right)^{10}\)
\(=\left(-x\right)^{11-10}\)
\(=\left(-x\right)^1\)
\(\Rightarrow-x^1=-x\)
Ta có (-x)10=x10( Vì mũ chẵn)
=> x11: (-x)10=x11:x10=x
Học tốt
\(x^{11}:\left(-x\right)^{10}\)
\(\Rightarrow\left(-x\right)^{11-10}\)
\(\Rightarrow\left(-x\right)^1\)
\(\Rightarrow\)x
\(x^{11}\div\left(-x\right)^{10}\)
\(=x^{11}\div x^{10}\)
\(=x\)
\(\Rightarrow x\inℕ\)
Vậy \(x\inℕ\)
