Question

x^4-16^2+15=0

please solve

Answer 1

x^2-241=0
x^2=241
x=+-sqr241

Answer 2

\[x=\sqrt[4]{271}\]

Answer 3

i'm sorry! i meant x^4-16x^2+15=0

Answer 4

4.0573485964548730093221785586954571686819749139665696236896

Answer 5

please factor :D

Answer 6

(x-1) (x+1) (x^2-15) = 0

Answer 7

sorry but could you explain how you got that?

Answer 8

x^4 - 16x^2 + 15=0
possible factors of x^4: x^2 &x^2
possible factors of 15: -15 & -1
cross multiply and add = -16x^2 (middle term) -15