Question

X +1/x=3 then find x^5+1/x^5=? Please give full explanation of this Algeria expressions sum.

Answer 1

Answer:

123

Step-by-step explanation:

(x+1/x) = 3

(x²+1/x²) = 9-2 = 7

(x³+1/x³) = (3)³-3*3 = 18

(x^5 + 1/x^5 ) = (x³+1/x³)(x²+1/x²) - (x+1/x)

= 18*7 - 3

= 123 (ans.)