Question

me ajudem pfv!!
A)x-1/x+2=x+3/x-4
B)x-4/x+6=x+3/x-2

c os cálculos pfv!!☺️​

Answer 1

Resposta:

Explicação passo a passo

A)x-1/x+2=x+3/x-4
(x-1).(x-4)= (x+2).(x+3)
x² - 4x - x + 4= x²+3x+2x+6
-5x + 4 = 5x + 6
4-6=5x+5x
-2= 10x (:2)
-1= 5x
5x = - 1
x = - 1/5

________
B)x-4/x+6=x+3/x-2

(x-4).(x-2)= (x+6)(x+3)
x² -2x -4x +8 = x²+3x+6x+18
-6x+8= 9x+18
8-18= 9x+6x
-10= 15x (:5)
-2= 3x
3x= - 2
x = - 2/3