Question

If x = 2 - √3 , Then the values of x² + $\frac{1}{\sqrt{x^{2} } }$ and x² - $\frac{1}{x^{2} }$

Answer 1

Answer:

x=2−3⇒x1=2−31=2+3

(x2+x21)=(x+x1)2−2=(2−3+2+3)2−2=14

(x2−x21)=(x−x1)(x+x1)=(4×−23)=−83