Question

resolva (x+2) . (x-3) = 0​

Answer 1

Resposta:

Explicação passo a passo:

(x+2).(x-3)=0

x²-3x+2x-6=0

x²-1x-6=0

a=1

b=-1

c=-6

x=1+-V(-1)²-4.1.-6/2.1=

x=1+-V1+24/2=

x=1+-V25/2

x=1+-5/2

x'=1+5/2=6/2=3

x''=1-5/2=-4/2=-2

S={-2,3}