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

Toán Lớp 8: Đặt phép tính chia A,3y^3+y^2-13y+5:(y^2+2y+1) B,x^4-1:x^2+1

Toán Lớp 8: Đặt phép tính chia
A,3y^3+y^2-13y+5:(y^2+2y+1)
B,x^4-1:x^2+1

Comments ( 2 )

  1. a, (3y^3+y^2-13y+5): (y^2+2y+1) = 3y-5 (dư -6y+10)
    b, (x^4-1):(x^2+1) = (x^2-1)(x^2+1) :(x^2+1)=x^2-1

    toan-lop-8-dat-phep-tinh-chia-a-3y-3-y-2-13y-5-y-2-2y-1-b-4-1-2-1

  2. a)
    (3y^3+y^2-13y+5):(y^2+2y+1)
    =3y-5 dư -6y+10
    b)
    x^4-1
    =(x^2)^2-1
    =(x^2-1)(x^2+1)
    to (x^4-1):(x^2+1)=x^2-1
     

    toan-lop-8-dat-phep-tinh-chia-a-3y-3-y-2-13y-5-y-2-2y-1-b-4-1-2-1

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