a)10-[(8^2-48).5(2^3.10+8)] b)107-{38+[7.3^2-24:6+(9-7)^3]] c)500-{5[400-(2^3.3-21)^2]ư+10^2}:15 d)1560:[5.79-(125+5.49)+5.21]

0 bình luận về “a)10-[(8^2-48).5(2^3.10+8)] b)107-{38+[7.3^2-24:6+(9-7)^3]] c)500-{5[400-(2^3.3-21)^2]ư+10^2}:15 d)1560:[5.79-(125+5.49)+5.21]”

1. Đáp án+Giải thích các bước giải:

   $\begin{array}{l}a,10-[(8^{2}-48).5(2^{3}.10+8)]\\=10-[(64-48).5.(80+8)]\\=10-16.5.88\\=10-7040\\=-7030\\b,107-[38+(7.3^{2}-24:6+(9-7)^{3})]\\=107-[38+(63-4+8)]\\=107-[38+31]\\=107-69\\=38\\c,500-[(5[400-(2^3.3-21)^2]+10^2):15]\\=500-[(5.[400-9)+100):15]\\=500-[(1955+100):15]\\=500-(2055:15)\\=500-137\\=363\\d,1560:[5.79-(125+5.49)+5.21]\\=1560:[395-(125+45)+105]\\=1560:(395-170+105)\\=1560:330\\=\dfrac{52}{11}\\\underline{\text{CHÚC BẠN HỌC TỐT}}\\\end{array}$

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2. Đáp án:

   `a,10-[(8^{2}-48).5(2^{3}.10+8)`

   `=10-[(64-48).5.(80+8)]`

   `=10-16.5.88`

   `=10-7040`

   `=-7030`

   `b,107-[38+(7.3^{2}-24:6+(9-7)^3)]`

   `=107-[38+(63-4+8)]`

   `=107-[38+31]`

   `=107-69=38`

   `c,500-[(5[400-(2^3.3-21)^2]+10^2):15]`

   `=500-[(5.[400-9)+100):15]`

   `=500-[(1955+100):15]`

   `=500-(2055:15)`

   `=500-137`

   `=363`

   `d,1560:[5.79-(125+5.49)+5.21]`

   `=1560:[395-(125+45)+105]`

   `=1560:(395-170+105)`

   `=1560:330`

   `={52}/{11}`

   Giải thích các bước giải:

    

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