Question

expansion problem 3a-17​

Answer 1

Answer:

Step-by-step explanation:

As x+1/x=5

Squaring on both sides we get x²+1/x²=23

Answer 2

Answer:

(x²+1)/X=5

X+1/X=5

squaring on both sides

x²+1/x²+2(X)(1/X)=25

x²+1/x²+2=25

x²+1/x²=23