Question

HELP ME:

Answer 1

b: \(Q=x^3+y^3+3xy\left(x^2+y^2\right)+6x^2y^2\left(x+y\right)\)

\(=\left(x+y\right)^3-3xy\left(x+y\right)+3xy\left\lbrack\left(x+y\right)^2-2xy\right\rbrack+6x^2y^2\)

\(=1-3xy+3xy\left(1-2xy\right)+6x^2y^2\)

\(=1-3xy+3xy-6x^2y^2+6x^2y^2\)

=1