Question

x⁴-17x²+16=0 Qual a Resolução ????

Answer 1

x^4-17x^2+16=0
y^2-17y+16=0
delta=b^2-4ac
delta=(-17)^2-4.1.16
delta=289-64
delta=225
y=-b-/+ raiz de delta/2a
y=-(-17)-15/2.1
y=17-15/2
y=2/2
y=1
y=-(-17)+15/2.1
y=17+15/2
y=32/2
y=16
S={1, -1, 16, -16}