Question

resolva a aequaçao 10 -X/X=X+2

Answer 1

isto mesmo vc esta certa

Answer 2

10 - x = x² + 2x
x² + 3x - 10 = 0
∆ = b² - 4ac
∆ = 9 + 40
∆ = 49
x = (-b + √∆)/2a
x1 = (-3 + 7) / 2 = 2
x2 = (-3 - 7) / 2 = -5

logo S ={-5; 2}