... .435853.4358.438581.5358.4385.5353.81/412 7 18 7 1811.12 7 18 7 .12 7 12 7 .1811/352929 7 .5292.529 7 .52/2 77 ,2)15,3(38,0]15,3).8.(125,0[)38,0.4,0.5,2()]8.(15,3.125,0[)4,0.38,0.5,2/(1−=−+=−++−=−+−+−=−−=−−−=+−=−+−=−−−=−−−=−−−Bài ... 1.313331*322331*3311431/84 27, 1 573 ,022 573 ,0 /7 2,1/65,25,2/511 7 1211:12 7 4165.12116525,0.1211/449435 7 :3543 7 354.5 7 54 7 3.521/311883.33643331183:/25,353:10211021.53/1−==>−=+==>=+=>=+=>−=−+±==>−==>=+∅∈=>−=±==>=−==>−=−=−=+−−==>−=−−=−=+−==>−=−=−==>−==−xxxxxxxxxxxxxxxxxxxxxxxxxxxDạng ... vào145 7 .10 7 5:41254115 7 5:4125 7 5:4115/431331 27 1.813131.9.9/36)14.( 7 331333119. 7 33133. 7 33119. 7 3/25,25,0115,02116215234234121165,02342152341/13=−−=−−=−−−−=+−=+−−=−=−=−==+=+++−=++−+Dạng 2: Tính nhanh1/ (-6, 37. 0,4).2,5 = -6, 37 .(0,4.2,5) = -6, 37 2/ (-0,125).(-5,3).8= [(-0,125).8].(-5,3) = 5,33/ (-2,5).(-4).( -7, 9)= 10.( -7, 9) = -79 4/ (-0, 375 ).314.(-2)3= 3. 313=...