A) RESUELVA (CON DESARROLLO)
1. (x + 2)(x + 3) =
A) x2+6x+5
B) x2+5x+6
C) x2+5x+5
D) x2+x+6
1. (x + 2)(x + 3) =
A) x2+6x+5
B) x2+5x+6
C) x2+5x+5
D) x2+x+6
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Respuesta:
2 + 5 + 6
(2 elevado)
[tex]x^{2} +5x+6[/tex]
Pasos:
[tex](x + 2)(x + 3)[/tex]
Aplicar la propiedad: [tex](a+b)(c+d)=ac+ad+bc+bd[/tex]
= [tex]xx+x*3+2x+2*3[/tex]
Simplificar: [tex]xx+x*3+2x+2*3[/tex] : [tex]x^{2} +5x+6[/tex]
= [tex]x^{2} +5x+6[/tex]