Question

x+1/x =4 ,find the value of x²+1/x²​

Answer 1

Answer:

14

Step-by-step explanation:

given x+1/x=4

squaring both sides we get

[x+1/x]²=4²

x²+1/x²+2(x)(1/x)=16 since (a+b)²=a²+b²+2ab

x²+1/x²+2=16

x²+1/x²=14