题目化简:a2×a3=a^{2}\times a^{3}=a2×a3=______；(xy2)3=(xy^{2})^{3}=(xy2)3=______；2m2n3⋅(−2n)=2m^{2}n^{3}\cdot \left(-2n\right)=2m2n3⋅(−2n)=______；(12x2y4)÷(4x2y)=______;(π−6)0=(12x^{2}y^{4})\div (4x^{2}y)= \_\_\_\_\_\_;\left(\pi -6\right)^{0}=(12x2y4)÷(4x2y)=______;(π−6)0=______；42020×(−0.25)2021=______.4^{2020}\times \left(-0.25\right)^{2021}= \_\_\_\_\_\_.42020×(−0.25)2021=______.知识点：多项式乘多项式章节：数与式 / 整式
