solve polynomial equation by factoring
x^4 +100 = 29x^2
let z = x^2
z^2 - 29 z + 100 = 0
( Z-25 )( z- 4 ) = 0
z = 25 then x = +5 or -5
or z = 4 then x = +2 or -2
x^4 +100 = 29x^2
z^2 - 29 z + 100 = 0
( Z-25 )( z- 4 ) = 0
z = 25 then x = +5 or -5
or z = 4 then x = +2 or -2