Question

solve w^4-18^2-2=0

Answer 1

18w^2??

Answer 2

yes

Answer 3

let x=w^2
the eq becomes:x^2-18x-2=0
now solve this simple quadratic eq.

Answer 4

x^2-36w-2=0 am i right

Answer 5

the eq. becomes:
(x-9)^2-81-2=0
(x-9)^2=83
(x-9)=+-sqrt(83)
x=9+-sqrt(83)
x=9-sqrt(83) is rejected
w^2=9+sqrt(83)
w=+-sqrt(9+sqrt(83))

Answer 6

there willl be 4 answers

Answer 7

9-sqrt(83)<0....