Question

( x ( x-5) = -6 me ajudem por favor

Answer 1

Bom dia!


(x ( x-5) = -6

x² - 5x = -6

x² -5x +6 = 0

a= 1

b= -5

c= 6

∆ = b² -4.a.c

∆ = (-5)²-4.1.6

∆ = 25 -24

∆ = 1

x = -b±√∆ / 2.a

x = -(-5) ±√1 / 2

x' = 5 + 1/2

x' = 6/2

x' = 3

x" = 5-1/2

x" = 2

S = { 2,3}