Question

4x4-5x2+1=0 equação biquadrada urgentee

Answer 1

x2 = R , ou seja:
4R2-5R+1=0
delta= 25-4.1.4
delta= raiz de 9 = +3 e -3
R= +5-3/4.2= 1/4
R= 5+3/4.2=1


R=x2


1=x2. 1/4=x2
-1 e 1 1/2 e -1/2

Answer 2

Resposta:

$4x^4-5x^2+1=0\\\\x=u\\\\4u^2-5u+1=0\\\\u=1,\:u=\frac{1}{4}\\\\x=1,\:x=-1,\:x=\frac{1}{2},\:x=-\frac{1}{2}$