Question

1- resolva as equações
X²-8x+12=0

Answer 1

Resposta:

x²-8x+12=0

A=1 B=-8 C=12

∆=b²-4.a.c

∆=-8²-4.1.12

∆=64-48

∆=16

x= -b±√∆/2.a x¹=8+4/2= 12/2=6

x=-(-8)±√16/2.1

x=8±4/2 x²=8-4/2= 4/2=2

S={6,2}