Question

If x+1/x=7 find the value of x cube+1/x cube

Answer 1

hope it's help you

$x {}^{3} + y {}^{3} = x {}^{3} + 3xy(x + y)$

Answer 2

Step-by-step explanation:

x^3 + 1/x^3 + 3{ x+1/x}

x^3 +1/x^3 + 21