Question

qual a raiz da funçao; y=4x e de y=2x/5-1/3?? como resolver

Answer 1

a) y = 4x
y = 0 --> 4x = 0 --> x = 0/4 --> x = 0 (raiz)
y = 2x/5 - 1/3
mmc de 5 e 3 = 15
y/1 = 2x/5 - 1/3
15:1.y = 15:5.2x - 15:3.1
15y = 6x - 5
y = (6x - 5)/15
y = 0
(6x - 5)/15 = 0
6x - 5 = 0 . 15
6x - 5 = 0
6x = 5
x = 5/6 (raiz)