Question

Help me plis doy coronita :,3

Answer 1

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