Register Now

Login

Lost Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

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

Toán Lớp 8: Nhân: `(3x^6 – 4x^3 – 2) (-4x – 3x^2 -1)` (chi tiết)

Toán Lớp 8: Nhân: (3x^6 – 4x^3 – 2) (-4x – 3x^2 -1)
(chi tiết)

Comments ( 2 )

  1. (3x^6-4x^3-2)(-4x-3x^2-1)
    =3x^6.(-4x)+3x^6.(-3x^2)+3x^6.(-1)+(-4x^3).(-4x)+(-4x^3).(-3x^2)+(-4x^3).(-1)+(-2).(-4x)+(-2).(-3x^2)+(-2).(-1)
    =-12x^7-9x^8-3x^6+16x^4+12x^5+4x^3+8x+6x^2+2

  2. $(3x^6−4x^3−2)(−4x−3x^21)$
    $=3(−3????^2−4????−1)⋅????^6−4(−3????^2−4????−1)⋅????^3−2(−3????^2−4????−1)$
    $=−9????^8−12x^7−3????^6+12????^5+16????^4+4????^3+6????^2+8????+2$
     

Leave a reply

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