Question

Me uudem
Qual valor numerico da expansao alfebrica 5x+4
_____
X-2 Para a) x=0
B) x=1
C) x=2
D) x=3

Answer 1

5x+4/x-2
5x+4.(4/x-2)=0
5x+16/4x-16=0
20x/4+16/4x-16=0
36/5x=+16
5x=+16.36
5x=576
x=576/5
x=115,2