Question

3x²-12×+9=0
queria que montasse a conta ​

Answer 1

a=3 b=-12 c=9

∆=b²-4.a.c

∆=(-12)²-4.3.9

∆=144-108

∆=36

x=-b±√∆

2.a

x=-(-12)±√36

2.3

x=12±6

6

x'=12+6= 18= 3

6 6

x"=12-6= 6= 1

6 6