Question

if x +1/x=4 find x³+1/x³​

Answer 1

Answer:

Step-by-step explanation :

Step-by-step explanation :x - 1 / x = 3

Step-by-step explanation :x - 1 / x = 3On cubing both sides ;

Step-by-step explanation :x - 1 / x = 3On cubing both sides ;( x - 1 / x ) = ( 3 )³

Step-by-step explanation :x - 1 / x = 3On cubing both sides ;( x - 1 / x ) = ( 3 )³Using Identity :

Step-by-step explanation :x - 1 / x = 3On cubing both sides ;( x - 1 / x ) = ( 3 )³Using Identity :( a - b )³ = a³ - b³ - 3 ab ( a - b )

Step-by-step explanation :x - 1 / x = 3On cubing both sides ;( x - 1 / x ) = ( 3 )³Using Identity :( a - b )³ = a³ - b³ - 3 ab ( a - b )⇒ x³ - 1 / x³ - 3 ( x - 1 / x ) = 27

Step-by-step explanation :x - 1 / x = 3On cubing both sides ;( x - 1 / x ) = ( 3 )³Using Identity :( a - b )³ = a³ - b³ - 3 ab ( a - b )⇒ x³ - 1 / x³ - 3 ( x - 1 / x ) = 27⇒ x³ - 1 / x³ - 3 ( 3 ) = 27

Step-by-step explanation :x - 1 / x = 3On cubing both sides ;( x - 1 / x ) = ( 3 )³Using Identity :( a - b )³ = a³ - b³ - 3 ab ( a - b )⇒ x³ - 1 / x³ - 3 ( x - 1 / x ) = 27⇒ x³ - 1 / x³ - 3 ( 3 ) = 27⇒ x³ - 1 / x³ - 9 = 27

Step-by-step explanation :x - 1 / x = 3On cubing both sides ;( x - 1 / x ) = ( 3 )³Using Identity :( a - b )³ = a³ - b³ - 3 ab ( a - b )⇒ x³ - 1 / x³ - 3 ( x - 1 / x ) = 27⇒ x³ - 1 / x³ - 3 ( 3 ) = 27⇒ x³ - 1 / x³ - 9 = 27⇒ x³ - 1 / x³ = 27 + 9

Step-by-step explanation :x - 1 / x = 3On cubing both sides ;( x - 1 / x ) = ( 3 )³Using Identity :( a - b )³ = a³ - b³ - 3 ab ( a - b )⇒ x³ - 1 / x³ - 3 ( x - 1 / x ) = 27⇒ x³ - 1 / x³ - 3 ( 3 ) = 27⇒ x³ - 1 / x³ - 9 = 27⇒ x³ - 1 / x³ = 27 + 9⇒ x³ - 1 / x³ = 36

Answer 2

Answer:

here is ur ans

Step-by-step explanation:

hope this helps u