B2 Tinh a 2010°t 15?:156-1 B23. 19 -2′,14 +2019 4223-110+8) : 32 D. 4 20 :(4 15.7+4 15.9) 2019

Question

B2 Tinh
a 2010°t 15?:156-1
B23. 19 -2′,14 +2019
4223-110+8) : 32
D. 4 20 :(4 15.7+4 15.9)
2019

b2-tinh-a-2010-t-15-156-1-b23-19-2-14-2019-4223-110-8-32-d-4-20-4-15-7-4-15-9-2019

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Philomena 8 tháng 2020-10-16T01:53:21+00:00 2 Answers 80 views 0

Answers ( )

  1. `a)2020^0+15^7÷15^6-1^2019`

    `=1+15-1`

    `=15`

    `b)2^3×19-2^3×14+1^2018`

    `=2^3×(19-14)+1`

    `=8×5+1`

    `=40+1`

    `=41`

    `c)2^2×3-(1^10+8)÷3^2`

    `=4×3-(1+8)÷9`

    `=12-9÷9`

    `=12-1`

    `=11`

    `d)4^20÷(4^15×7+4^15×9)`

    `=4^20÷[4^15×(7+9)]`

    `=4^20÷[4^15×16]`

    `=4^20÷[4^15×4^2]`

    `=4^20÷4^17`

    `=4^3`

    `=64`

    CHÚC BẠN HỌC TỐT!!!

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    b2-tinh-a-2010-t-15-156-1-b23-19-2-14-2019-4223-110-8-32-d-4-20-4-15-7-4-15-9-2019

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