Question

calcule a discriminante ∆ e escreva as raízes se possível
x²-x-6=0​

Answer 1

x²-x-6=0

∆=b²-4ac

∆= (-1)²-4.1.(-6)

∆=1+24

∆=25

x=-b± √∆

-------

2a

x= -(-1)±√25

------------

2.1

x= 1±5

-------

2

x'= 1+5 6

------- = ---- = 3

2 2

x"= 1-5 -4

----- = ------- = -2

2 2