Question

URGENTE
RESOLVA AS EQUAÇÕES COMPLETAS
c)x²-6x+9=0
d)-x²+10-24=0​

Answer 1

Resposta:

a) X²-6x+9=0

a= 1, b=-6, c=9

∆= (-6)²-4x1x9

∆= 36-36

∆=0

x= -(-6)+-√∆/2x1

x= +6+-0/2

x= 3

d) -X²+10-24=0

a= -1, b=10, c= -24

∆= 10²-4x(-1)x(-24)

∆= 100-96

∆= 4

x= -10+-√4/2(-1)

x= -10+-2/-1

x'= -10+4/-2= -3

x"= -10-4/-2= 7