Respuesta:
(a+1)(a+2)
=(a+1)(a+2)
=(a)(a)+(a)(2)+(1)(a)+(1)(2)
=a2+2a+a+2
=a2+3a+2
Simplificar
(x+5)(x−2)
=(x+5)(x+−2)
=(x)(x)+(x)(−2)+(5)(x)+(5)(−2)
=x2−2x+5x−10
=x2+3x−10
(a²+5)(a²−9)
=(a²+5)(a²+−9)
=(a²)(a²)+(a²)(−9)+(5)(a²)+(5)(−9)
=a²−9a²+5a²−45
=a a la 4−4a2−45
(n²−1)(n²+20)
=(n²+−1)(n²+20)
=(n²)(n²)+(n²)(20)+(−1)(n²)+(−1)(20)
=n a la 4+20n²−n²−20
=n ala 4+19n²−20
Explicación paso a paso:
dame una corona plis :3
