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

Toán Lớp 8: ( x-2)^3-(x-3)*(x^2+3x+9)+6(x+1)^2

Home/ Toán Lớp 8: ( x-2)^3-(x-3)*(x^2+3x+9)+6(x+1)^2

Toán Lớp 8: ( x-2)^3-(x-3)*(x^2+3x+9)+6(x+1)^2

Tháng Tư 22, 2022 Toán học 1 Comment 0 views

Toán Lớp 8: ( x-2)^3-(x-3)*(x^2+3x+9)+6(x+1)^2

Comments ( 1 )

  1. phuongthaongoc
    phuongthaongoc
    22 Tháng Tư, 2022 at 8:51 chiều
    Reply
    (x-2)^3-(x-3).(x^2+3x+9)+6.(x+1)^2
    =(x^3-6x^2 + 12x – 8) – (x^3-3^3) + 6.(x^2+2x+1)
    =x^3-6x^2 + 12x-8-x^3-x^3+27+6x^2+12x+6
    =(x^3-x^3)+(6x^2-6x^2)+(12x+12x)+(27+6-8)
    =24x + 25
    #wcdi

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

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