(-3xy²)³+(-2x²)(-xy²) 化简（-5a^6)^2+(-2a^3)^3*a^3不好意思，写错了。是（-3xy²)³+(-2x²y^4)(-xy²)（-3xy²)³+(-3x²y^4)(-xy²)

(-3xy²)³+(-2x²)(-xy²) 化简（-5a^6)^2+(-2a^3)^3*a^3不好意思，写错了。是（-3xy²)³+(-2x²y^4)(-xy²)（-3xy²)³+(-3x²y^4)(-xy²)
(-3xy²)³+(-2x²)(-xy²) 化简
（-5a^6)^2+(-2a^3)^3*a^3
不好意思，写错了。是
（-3xy²)³+(-2x²y^4)(-xy²)
（-3xy²)³+(-3x²y^4)(-xy²)

(-3xy²)³+(-2x²)(-xy²) 化简（-5a^6)^2+(-2a^3)^3*a^3不好意思，写错了。是（-3xy²)³+(-2x²y^4)(-xy²)（-3xy²)³+(-3x²y^4)(-xy²)
(-3xy²)³+(-2x²)(-xy²)
=-27x³y6次方+2x³y²
（-5a^6)^2+(-2a^3)^3*a^3
=25a^12-8a^9*a^3
=25a^12-8a^12
=17a^12

(-3xy²)³+(-2x²)(-xy²) =-x^3y^2[(-3y^2)^2-2)=-x^3y^2(9y^4-2)
（-5a^6)^2+(-2a^3)^3*a^3=25a^12-8a^12=17a^12

1. (-3xy²)³+(-2x²)(-xy²) = -27x^3y^6+2x^3y^2=x^3y^2(2-27y^4)

2. （-3xy²)³+(-2x²y^4)(-xy²)=-27x^3y^6+2x^3y^6=-25x^3y^6

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   1. (-3xy²)³+(-2x²)(-xy²) = -27x^3y^6+2x^3y^2=x^3y^2(2-27y^4)

   2. （-3xy²)³+(-2x²y^4)(-xy²)=-27x^3y^6+2x^3y^6=-25x^3y^6

   3. （-3xy²)³+(-3x²y^4)(-xy²)=-27x^3y^6+3x^3y^6=-24x^3y^6

   4. （-5a^6)^2+(-2a^3)^3*a^3=25a^12-8a^12=17a^12
      

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