Question

If x square plus 1 upon x square is equal to 34 find the value of x cube plus 1 upon x cube minus 9 considering only the positive value if x plus 1 upon x

Answer 1

Hi ,

x² + 1/x² = 34----( 1 )


x² + 1/x² + 2 × x² × 1/x² = 34 +2

( x + 1/x )² = 36

( x + 1/x ) = √36

x + 1/x = 6 -----( 2 )

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

6³ = x³ + 1/x³ + 3 × 6

216 = x ³ + 1/x³ + 18

216 - 18 = x³ + 1/x³

Therefore ,

x³ + 1/x³ = 198

I hope this helps you.

:)

Answer 2

Answer:

put the correct information