Question

Resolva Essa Equação Biquadrada
C) 2x4-x2-15=0

Answer 1

2x^4-x^2-15=0
2y^2-y-15=0
delta=b^2-4ac
delta=(-1)^2-4.2.(-15)
delta=1+120
delta=121
y=-b-/+ raiz de delta/2a
y=-(-1)-11/2.2
y=1-11/4
y=-10/4 (÷2)
y=-5/2
y=-(-1)+11/2.2
y=1+11/4
y=12/4
y=3
S={-5/2, +5/2, +3, -3}