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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 8: 1/2x.(x^2-x+1)-(1/2.x-1).(x+1) Gấp nhaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa==..

Home/ Toán Lớp 8: 1/2x.(x^2-x+1)-(1/2.x-1).(x+1) Gấp nhaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa==..

Toán Lớp 8: 1/2x.(x^2-x+1)-(1/2.x-1).(x+1) Gấp nhaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa==..

Tháng Bảy 23, 2022 Toán học 2 Comments 0 views

Toán Lớp 8: 1/2x.(x^2-x+1)-(1/2.x-1).(x+1)
Gấp nhaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa……………………..

Comments ( 2 )

  1. thienthanh
    thienthanh
    23 Tháng Bảy, 2022 at 1:26 sáng
    Reply
    Giải đáp + Lời giải và giải thích chi tiết:
    1/2x.(x^2-x+1)-(1/2.x-1).(x+1)
    = 1/2x^3 – 1/2x^2 + 1/2x – (1/2x^2 + 1/2x – x – 1)
    = 1/2x^3 – 1/2x^2 + 1/2x – 1/2x^2 – 1/2x + x + 1
    = 1/2x^3 – (1/2x^2 + 1/2x^2) + (1/2x – 1/2x + x) + 1
    = 1/2x^3 – x^2 + x + 1
    #SunHee

  2. buithaianh98
    buithaianh98
    23 Tháng Bảy, 2022 at 1:25 sáng
    Reply
    Giải đáp:
    1/2x (x^2 – x+1) – (1/2x – 1)(x+1) = 1/2 x^3 – x^2 + x + 1
    Lời giải và giải thích chi tiết:
     1/2x (x^2 – x+1) – (1/2x – 1)(x+1)
    = 1/2x . x^2 – 1/2 x . x + 1/2 x.1 – (1/2 x . x + 1/2 x  . 1 – 1 . x – 1.1)
    = 1/2 x^3 – 1/2 x^2 + 1/2 x – (1/2 x^2 + 1/2 x – x – 1)
    = 1/2 x^3 – 1/2 x^2 + 1/2x – 1/2 x^2- 1/2x + x + 1
    = 1/2 x^3 – (1/2 x^2 + 1/2 x^2) + (1/2 x –  1/2 x + x) + 1
    =  1/2 x^3 – x^2 + x + 1

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222-9+11+12:2*14+14 = ? ( )

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