Question

If x is equal to 7 + 4 root 3 find the value of x + 1 by x and x square + 1 by x square

Answer 1

Answer:14 &194

Step-by-step explanation:

x=7+4root3

1/x= 1/7+4root3

=7-4root3 /(7+4root3)(7-4root3)

=7-4root3 /49-48[A^2-B^2 formula applied ]

=7-4root3

now x-1/x= 14

then (x-1/x)^2= 196

x^2+1/x^2 -2*x*1/x=196

x^2 + 1/x^2 =194