Bx33x6C的精选

问题详情：下列运算正确的是().A.x3·x2=x5                     B.(x3)3=x6C.x5+x5=x10                     D.x6-x3=x3【回答】A[解析](x3)3=x9;x5+x5=2x5;x6与x3不能合...