解:(-2)(xy²)²*3x²y÷(-x³y^4)
=(-2)x²y^4*3x²y÷(-x³y^4)
=6(x²y^4)*x²y÷x³y^4
=6x^(2+2-3)*y^(4+1-4)
=6xy
(4x²y-6x^4y^3)÷(-6x²y)
=-2/3+x²y²
(-2)(xy²)²*3x²y÷(-x³y^4)
=6(x²y^4)*x²y÷x³y^4
=6x^(2+2-3)*y^(4+1-4)
=6xy
-2/3+x^2*y
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