Question

Помогите, пожалуйста

Answer 1

$x-\frac{1}{x}=2\\\\(x-\frac{1}{x})^{2}=2^{2}\\\\x^{2}-2*x*\frac{1}{x}+(\frac{1}{x})^{2}=4\\\\x^{2} -2+\frac{1}{x^{2}}=4\\\\x^{2}+\frac{1}{x^{2}}=4+2\\\\x^{2}+\frac{1}{x^{2}}=6 \\\\Otvet:\boxed{6}$

Answer 2

(x-(1/x))²=2²

x²+(1/x²)-2=4⇒x²+(1/x²)=6