Question

10/x-1=x+2, sendo x=1

Answer 1

• se for 10/(x -1) = x - 2
10 = (x - 1)(x - 2)
10 = x² - 2x - x + 2
x² - 3x - 8 = 0

x = 1

1 - 3 - 8 = -10

Answer 2

Resp:10/x-1=x+2
Esta dividindo passa multiplicando, entao fica
10=x-1(x+2)
10= x^{2} +3x+2=10
 x^{2} +3x-8=0
Daqui para frente ultiliza Bakara
Δ=b^2 -4.a.c
Δ= 3^2 -4.1.(-8)
Δ=9+40
Δ=49
x´= -b+-√Δ/2.a
x´=-3+-√49 / 2.1
x´=-3+-7 / 2
x´= -3 +7 / 2 = 4/2 = 2
x´´=-3-7 / 2= -10 / 2 = 5