题目计算或化简:(1)2x4⋅x2+(−x3)2+(−2x2)3(1)2x^{4}\cdot x^{2}+(-x^{3})^{2}+(-2x^{2})^{3}(1)2x4⋅x2+(−x3)2+(−2x2)3；(2)(2−x+4x+1)÷2x−x2x2+2x+1(2)(2-\frac{x+4}{x+1})÷\frac{2x-{x}^{2}}{{x}^{2}+2x+1}(2)(2−x+1x+4)÷x2+2x+12x−x2.知识点：分式的混合运算章节：数与式 / 分式
