Question

if x plus one upon X equals to 5 then find the value of x cube + one upon x cube

Answer 1

Answer:

x³ + 1/x³ = 110

Step-by-step explanation:

if x plus one upon X equals to 5 then find the value of x cube + one upon x cube

x + 1/x  = 5

to find x³ + 1/x³

using identity (a + b)³ = a³ + b³ + 3ab(a + b)

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

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

putting x + 1/x = 5

=> 5³  = x³ + 1/x³ + 3*5

=> 125 = x³ + 1/x³ + 15

=>  x³ + 1/x³ = 110

Answer 2

Step-by-step explanation:

this is the step to your answer

hope its help you