Môn Toán a, 1,29.(2,59-4,71)+4,71.(1,29+2,29) b, 2,375.(4,925+1,37)-4,925.(2,375-1,37) 9 Tháng Chín, 2023 1 Comment a, 1,29.(2,59-4,71)+4,71.(1,29+2,29) b, 2,375.(4,925+1,37)-4,925.(2,375-1,37)
a) 1,29xx(2,56-4,71)+4,71xx(1,29+2,29) =1,29xx[2,56+(-4,71)]+4,71xx3,58 =1,29xx(-2,15)+16,8618 =-2,7735+16,8618 =14,0883 b) 2,375xx(4,925+1,37)-4,925xx(2,375-1,37) =2,375xx6,295-4,925xx1,005 =14,950625-4,949625 =10,001 Trả lời
