Question

Ifx=9-4 root 5,then find the value of x square+ 1/ x square

Answer 1

Answer:

Step-by-step explanation:

x = 9 - 4√5

x² + 1 = ( 9 - 4√5)² + 1 = 81 + 80 - 72√5 + 1 = 162 -72√5 = 1.003

x² = ( 9 - 4√5)² = 1 = 81 + 80 - 72√5 = 161 - 72√5 = 0.003

Now, (x² + 1)/x² = 1.003/ 0.003 = 334.333333333