Question

a raiz da equação: -3x²+18=0​

Answer 1

RESPOSTA:

X²-11X+18=0

a=1

b=-11

c=18

∆=b²-4ac

∆=(-11)²-4.1.18

∆=121-72

∆=49

√∆=7

x=-b±√∆/2a

x=11±7/2

x'=11+7/2

x'=18/2

x'=9

x"=11-7/2

x"=4/2

x"=2