Vamos a simplificar paso a paso:
(x+3)(x−3)+(x+2)(x−2)
Distribuye:
=(x)(x)+(x)(−3)+(3)(x)+(3)(−3)+(x)(x)+(x)(−2)+(2)(x)+(2)(−2)
=x2+−3x+3x+−9+x2+−2x+2x+−4
Combinar términos comunes:
=(x2+x2)+(−3x+3x+−2x+2x)+(−9+−4)
=2x2+−13
solución:
=2x2−13
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Vamos a simplificar paso a paso:
(x+3)(x−3)+(x+2)(x−2)
Distribuye:
=(x)(x)+(x)(−3)+(3)(x)+(3)(−3)+(x)(x)+(x)(−2)+(2)(x)+(2)(−2)
=x2+−3x+3x+−9+x2+−2x+2x+−4
Combinar términos comunes:
=x2+−3x+3x+−9+x2+−2x+2x+−4
=(x2+x2)+(−3x+3x+−2x+2x)+(−9+−4)
=2x2+−13
solución:
=2x2−13