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下列运算正确的是
A．x2+ x3 = x5 B．x4·x2 = x6 C．x6÷x2 = x3 D．( x2 )3 = x8
A．x2+x3=x5° B．（x﹣2）2=x2﹣4
C．2x2•x3=2x5 D．（x3）4=x7
A．x2+ x3 = x5 B．x4·x2 = x6 C．x6÷x2 = x3 D．( x2)3 = x8