Question

If x=9-4√5, find the value of x^2+1/x^2​

Answer 1

Answer:

hope this will help you

Step-by-step explanation:

x=9+45⇒x1=9+451

Multiplying and dividing the fraction by conjugate of denominator 9+45 i.e., 9−45

∴x1=(9+45)(9−45)9−45=(9)2−(45)29−45=81−809−45=9−45

Thus, x+x1=9+45+9−45=18.

Answer 2

Answer:

Step-by-step explanation: