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: b) (x – 5)– 4x(5 – x) c) 2x³ – 13x² + 5x + 6

Home/ Toán Lớp 8: b) (x – 5)– 4x(5 – x) c) 2x³ – 13x² + 5x + 6

Toán Lớp 8: b) (x – 5)– 4x(5 – x) c) 2x³ – 13x² + 5x + 6

Tháng Tư 23, 2022 Toán học 2 Comments 0 views

Toán Lớp 8: b) (x – 5)– 4x(5 – x)
c) 2x³ – 13x² + 5x + 6

Comments ( 2 )

  1. giahan44
    giahan44
    23 Tháng Tư, 2022 at 12:42 chiều
    Reply
    Giải đáp:
    b) (x -5)- 4x(5 – x)
    = ( x -5) + 4x ( x -5)
    = ( x -5) ( 1 + 4x)
    $\\$
    c, 2x³ – 13x² + 5x + 6
    = 2x²(x – 1) – 11x(x – 1) – 6(x – 1)
    = (2x² – 11x – 6)(x-1)
    = [2x(x – 6) + (x – 6)](x-1)
    = (2x +1)( x -6)( x -1)

  2. hiennhi98
    hiennhi98
    23 Tháng Tư, 2022 at 12:42 chiều
    Reply
    b) (x – 5) – 4x(5 – x)
    = (x – 5) + 4x(x – 5)
    = (x – 5)(1 + 4x)
    c) 2x³ – 13x² + 5x + 6
    = 2x³ – 2x² – 11x² + 11x – 6x  + 6
    = 2x²(x – 1) – 11x(x – 1) – 6(x – 1)
    = (x – 1)(2x² – 11x – 6)
    = (x – 1)(2x² – 12x + x – 6)
    = (x – 1)[2x(x – 6) + (x – 6)]
    = (x – 1)(x – 6)(2x + 1)
    $\textit{Shiii}$

Leave a reply

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

Nhiên

About Nhiên