Question

(x*4-1):20+1=5 si me ayudan les doy 10puntos

Answer 1

(x^4-1)/20+1=5
(x^4-1)/20=4
x^4-1=80
x^4-81=0
(x^2)^2-9^2=0
(x^2-9)(x^2+9)=0
x^2-9=0  (x-3)(x+3)=0  x=3  y=-3
x^2+9=0  x^2=-9=(-3)^2  x=3i  x=-3i