Question

Who was the first answer

i will mark it brainlist

Answer 1

Answer:

here, is your answer bro.

50

Answer 2

$\fbox\red{your ans}$

Given = x² + 1/x² = 14

using = (a + 1 ) ² = 4² + 1² + 2al we get

= (x + 1/x ) ² = x² + 1/x² + 2 (1/x)(x)

= (x + 1/x ) = √14 + 2 = √16

= x + 1/x = 4

using = (a + l )³ - 3al (a + l ) = a³ + l³ we get,

( x +1/x )³ - 3 (x)(1/x)(x+1/x) = x³ + 1/x³

x³ + 1/x³ = (a)³ - 3 (1) (4)

x³ + 1/x³ = 64-12

x³ + 1/x³ = 52 ans