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: Phân tích thành nhân tử. a) 20x – 5y b) 5x(x – 1) – 3x(x – 1)

Toán Lớp 8: Phân tích thành nhân tử.
a) 20x – 5y
b) 5x(x – 1) – 3x(x – 1)

Comments ( 2 )

  1.  a) 20x – 5y = 5 . 4x – 5 . y = 5 (4x – 1)
    b) 5x(x – 1) – 3x(x – 1) = (5x – 3x) (x – 1) = 2x ( x – 1)
    * Công thức
    A . C – B . C = (A – B) . C

  2. ~ Bạn tham khảo ~
    a, 20x – 5y
    = 5(4x-y)
    b, 5x(x-1)-3x(x-1)
    = (5x-3x)(x-1)
    = 2x(x-1)

Leave a reply

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