计算: (1)2 3 ×2 2 = _________ ; (2)(3×2) 2 = _________ ;(3)(2 3 ) 2 = _________
计算:(1)23×22=_________;(2)(3×2)2=_________;(3)(23)2=_________;(4)a7÷a3=_________(5)3x4...
计算: (1)2 3 ×2 2 = _________ ; (2)(3×2) 2 = _________ ;(3)(2 3 ) 2 = _________ ;(4)a 7 ÷a 3 = _________ (5)3x 4 ﹒4x 3 = _________ ;(6)﹣3xy(2x﹣3y)= _________ .(7)(x﹣2)(x+2)= _________ ;(8)(1﹣2x) 2 = _________ .
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