Question

if x plus one upon x is equal to 11 find the value of x cube + 1 upon x cube​

Answer 1

Answer:

1298

Step-by-step explanation:

x+1/x=11 ( take this as eq(i))

x³+1/x³=?

cubing both sides of eq(i)

(x+1/x) ³=11³

according to formula,

x³+1/x³+3*1/x*x(x+1/x) =1331

→x³+1/x³+3(11) =1331

→x³+1/x³+33=1331

→x³+1/x³=1331-33

Therefore, x³+1/x³=1298

Hope it helps u.