Question

x+1/x=4 find x²+1/x²​

Answer 1

Answer:

14

Step-by-step explanation:

x+1/x=4

squaring both side

(x+1/x)²=(4)²

x²+1/x²+2x×1/x=16.

(a+b)²=a²+b²+2ab

x²+1/x²=16-2

=14

Answer 2

Answer:

( a + b ) ^2 = a^2 + b^2 + 2ab

x^2+1/x^2 = 16 -2 =14