Question

pls do this . don't say i don't know​

Answer 1

Step-by-step explanation:

X²+1/X² =4

Add 2(X)(1/X) on both sides

(X² )+2(X)(1/X) +( 1/X)²=4 +2(X) (1/X)

(X +1/x)² =4+2

X+1/X= √6

COBS

X³+3(X) (1/X)+(X+1/X) +(1/X)³ =√6³

X³+3(√6)+(1/X)³=√6*√6*√6

X³+1/X³=6√6-3√6

Therefore X³+1/X³=3√6