Question

if X = 2+√3 then find out
(a) x^2 +1/x^2
B ) x^2-1/x^2

step by step please​

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

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