(-3/4x^2y-3/5xy^2+1)(-2/3xy)^2
=(-3/4x^2y-3/5xy^2+1)(4/9x^2y^2)
=-1/3x^4y^3 -4/15x^3y^4+4/9x^2y^2
(-3/4x^2y-3/5xy^2+1)(-2/3xy)^2
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