Question

resoluçao de x2-7x+12=0​

Answer 1

a = 1

b = -7

c = 12

^ (finge que isso é delta) = 49 - 4.12

^ = 49 - 48

^ = 1

x1 = 7 + 1 = 8/2 = 4

x2 = 7 - 1 = 6/2 = 3

Answer 2

x²-7x+12=0

∆=b²-4.a.c

∆=7²-4.1.12

∆=49-48

∆=1

X1=b+∆

________

2.a

7+1

_____

2.1

8

___

2

X1=4

x2 =b-∆

_______

2.1

7-1

--------

2.1

6

___

2

x2=3