Respuesta:
a) x²+ 2x+2x+4. b) x²-2x+2x-4 c) x²-2x-2x+4
Explicación paso a paso:
a) (x + 2) (x + 2)= (x)(x)+ (x)(2)+ (2)(x) + (2)(2).
=x²+2x+2x+4
b) (x + 2) (x -2)=(x)(x) + (x)(-2) + (2)(x) + (2)(-2)
=x²-2x+2x-4
c) (x -2) (x -2)= (x)(x) + (x)(-2) + (-2)(x) + (-2)(-2)
=x²-2x-2x+4
(recordá siempre la ley de los signos)
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Verified answer
Respuesta:
a) x²+ 2x+2x+4. b) x²-2x+2x-4 c) x²-2x-2x+4
Explicación paso a paso:
a) (x + 2) (x + 2)= (x)(x)+ (x)(2)+ (2)(x) + (2)(2).
=x²+2x+2x+4
b) (x + 2) (x -2)=(x)(x) + (x)(-2) + (2)(x) + (2)(-2)
=x²-2x+2x-4
c) (x -2) (x -2)= (x)(x) + (x)(-2) + (-2)(x) + (-2)(-2)
=x²-2x-2x+4
(recordá siempre la ley de los signos)