Question

x+1/x=1 , then find the value of x^3 + 1​

Answer 1

Step-by-step explanation:

x+1/x=1

taking cube on b.s

(x+1/x)³=(1)³

as we know that,

(a+b)³=a³+b³+3ab(a+b)

so,

(x+1/x)³=x³+1/x³+3(x)(1/x)(x+1/x)

(1)³=x³+1/x³+3(1)

x³+1/x³+3=1

x³+1/x³=1-3

x³+1/x³=-2