Question

calcular: P(3a, -2a); sabiendo que:
P(x;y)= x³ + y³ + 3xy(x + y)​

Answer 1

(x+y)^2 = x^2 +y^2 +2xy

1^2 = 2+2xy

2xy =-1

xy =-1/2

(x^3 + y ^3)=(x+y)(x^2 + y^2 - xy)

(x^3 + y^3) =(1)(2-xy)

=(1)(2+1/2)

=5/2

espero te ayude pasa bonito la navidad con tu familia ;)