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1 计算: (1)106104; (2) x5 x3 ; (3)aa4; (4) y4 y4.,(1)106104,(2) x5 x3,解 106104 = 106+4 = 1010,解 x5 x3 = x5+3 = x8,(3)aa4,解 aa4 = a1+4 = a5,解 y4y4 = y4+4 = y8,(4) y4 y4,2. 计算: (1)22325; (2)x2 x3 x4 ; (3)-a5 a5 ; (4)am a ; (5)xm+1xm-1(其中m1).,解:(1) 22325 = 21+3+5 = 29 (2) x2 x3 x4 = x2+3+4 = x9,(3) -a5 a5 = -a5+5 = -a10,(4) am a = am+1 (5) xm+1xm-1(其中m1) = xm+1+m-1 = x2m,