Help me plis doy coronita :,3
Adjuntos:
raulalejito:
toca que le preguntes a alguien el todos exepto el primero
Respuestas a la pregunta
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2
Respuesta:
a+b-c:
(a+b-c)(a+b-c)
=a^2+ab-ac+ab+b^2-bc-ac+-bc+c^2
=a^2+2ab-2ac+b^2-2bc+c^2
=a^2+b^2+c^2+2ab-2ac-2bc
(1/2)x+xy-y^2:
((1/2)x+xy-y^2)((1/2)x+xy-y^2)
=(1/4)x^2+(1/2)x^2y-(1/2)xy^2+(1/2)x^2y+x^2y^2-xy^3-(1/2)xy^2-xy^3+y^4
=(1/4)x^2+x^2y-xy^2+x^2y^2-2xy^3+y^4
=(1/4)x^2+x^2y+x^2y^2-xy^2-2xy^3+y^4
2m-mn+(1/2)n^2:
(2m-mn+(1/2)n^2)(2m-mn+(1/2)n^2)
=4m^2-2m^2n+mn^2-2m^2n+m^2n^2-(1/2)mn^3+mn^2-(1/2)mn^3+(1/4)n^4
=4m^2-4m^2n+2mn^2+m^2n^2-mn^3+(1/4)n^4
23w^2-y^3-(3/4)z^4:
(23w^2-y^3-(3/4)z^4)(23w^2-y^3-(3/4)z^4)
=529w^4-23w^2y^3-(69/4)w^2z^4-23w^2y^3+y^6+(3/4)y^3z^4-(69/4)w^2z^4+(3/4)y^3z^4+(9/16)z^8
=529w^4-46w^2y^3-(69/2)w^2z^4+y^6+(3/2)y^3z^4+(9/16)z^8
=529w^4-46w^2y^3-(69/2)w^2z^4+(3/2)y^3z^4+y^6+(9/16)z^8
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