Question

[6xy^2乘(-2xy)^2-24x^5y^6除(-2xy)^2]除(-3xy^2)^2,其中x=2,y=2003

Answer 1

[6xy^2*(-2xy)^2-24x^5y^6/(-2xy)^2]/(-3xy^2)^2

=[6xy^2*4x^2y^2-24x^5y^6/(4x^2y^2)]/(9x^2y^4)

=(24x^3y^4-6x^3y^4)/(9x^2y^4)

=(18x^3y^4)/(9x^2y^4)

=2x

因为x=2

所以原式=2x=4