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: Bài 1: Làm tính nhân a/ -4.x^3.(x^2-3x+2) b/ -2/5.x^2.(5x^3+10x^2-15x) < dấu/ là phần>

Toán Lớp 8: Bài 1: Làm tính nhân
a/ -4.x^3.(x^2-3x+2)
b/ -2/5.x^2.(5x^3+10x^2-15x)
< dấu/ là phần>

Comments ( 2 )

  1. a/ -4x^3.(x^2-3x+2)
    = -4x^5 + 12x^4 – 8x^3
    b) -2/5x^2 . (5x^3 + 10x^2 – 15x)
    = -2x^5 – 4x^4 + 6x^3 
     

  2. \text{a)}
    -4x^3(x^2 -3x+2)
    = -4x^5 + 12x^4 – 8x^3 
    $\\$
    \text{b)}
    -2/5x^2(5x^3+10x^2-15x)
    = -2x^5 -4x^4 – 6x^3 
     

Leave a reply

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