题目下列运算错误的是（ ）A.4a2−a2=3a24a^{2}-a^{2}=3a^{2}4a2−a2=3a2B.a3⋅a6=a9a^{3}\cdot a^{6}=a^{9}a3⋅a6=a9C.(a2)3=a5(a^{2})^{3}=a^{5}(a2)3=a5D.(2a2)2=4a4(2a^{2})^{2}=4a^{4}(2a2)2=4a4知识点：合并同类项、幂的乘方与积的乘方、单项式乘单项式、整式的除法章节：未标注
