题目下面计算正确的是（ ）A.a6÷a2=a3a^{6}\div a^{2}=a^{3}a6÷a2=a3B.a2⋅a3=a6a^{2}\cdot a^{3}=a^{6}a2⋅a3=a6C.(x+2y)(x−2y)=x2−2y2(x+2y)\left(x-2y\right)=x^{2}-2y^{2}(x+2y)(x−2y)=x2−2y2D.(2x3)4=16x12(2x^{3})^{4}=16x^{12}(2x3)4=16x12知识点：合并同类项章节：数与式 / 代数式
