题目下列运算式中,正确的是（ ）A.x2+x2=x4x^{2}+x^{2}=x^{4}x2+x2=x4B.x2⋅x3=x5x^{2}\cdot x^{3}=x^{5}x2⋅x3=x5C.(xy)3=x3y(xy)^{3}=x^{3}y(xy)3=x3yD.(x2)3=x5(x^{2})^{3}=x^{5}(x2)3=x5知识点：同底数幂的乘法章节：数与式 / 整式
