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

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(3x^2+2y^3)(-3x^2+2y^3)(3x^2+2y^3)(-3x^2+2y^3)(3x^2+2y^3)(-3x^2+2y^3)=4y^6-9x^4-9x∧4+6x∧2y∧3-6x∧2y∧2

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

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

-9x∧4 +6x∧2y∧3-6x∧2y∧2+4y∧5