x cube +1/xcube=110 find (x+1/x)whole cube
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x³+1/x³ = 110
(x+1/x)³ = x³+1/x³ + 3(x+1/x)
we will solve this question by supposition method
let x+1/x = y
y ³ = x³+1/x³+3y
let y = 5
5³ = x³+1/x³+15
125-15 = x³+1/x³
110 = x³+1/x³
hence we know that (x+1/x) = 5
(x+1/x)³ = 5³ = 125
hope this helps
(x+1/x)³ = x³+1/x³ + 3(x+1/x)
we will solve this question by supposition method
let x+1/x = y
y ³ = x³+1/x³+3y
let y = 5
5³ = x³+1/x³+15
125-15 = x³+1/x³
110 = x³+1/x³
hence we know that (x+1/x) = 5
(x+1/x)³ = 5³ = 125
hope this helps
Brainman11:
Bro thnx a lot
ur welcome dude
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