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) 16y²– x² c) 4 -y² + 2xy – x² d) x²– 4x + 3

Home/ Toán Lớp 8: b) 16y²– x² c) 4 -y² + 2xy – x² d) x²– 4x + 3

Toán Lớp 8: b) 16y²– x² c) 4 -y² + 2xy – x² d) x²– 4x + 3

Tháng Bảy 26, 2022 Toán học 2 Comments 0 views

Toán Lớp 8: b) 16y²– x²
c) 4 -y² + 2xy – x²
d) x²– 4x + 3

Comments ( 2 )

  1. buianhtuan
    buianhtuan
    26 Tháng Bảy, 2022 at 9:35 chiều
    Reply
    b) 16y^2 – x^2
    = ( 4y )^2 – x^2
    = ( 4y – x ) ( 4y + x )
    c) 4 – y^2 + 2xy – x^2
    = 2^2 – ( x^2 – 2xy + y^2 )
    = 2^2 – ( x – y )^2
    = [ 2 – ( x – y ) ] ( 2 – x + y )
    = ( 2 – x – y ) ( 2 + x – y )
    d) x^2 – 4x + 3
    = x^2 – x – 3x + 3
    = x ( x – 1 ) – 3 ( x – 1 )
    = ( x – 1 ) ( x – 3 )

  2. maianh67
    maianh67
    26 Tháng Bảy, 2022 at 9:35 chiều
    Reply
    b,16y^2-x^2
    =(4y)^2-x^2
    =(4y-x)(4y+x)
    c,4 -y² + 2xy – x²
    =2^2-(y^2-2xy+x^2)
    =2^2-(y-x)^2
    =(2-y-x)(2+y-x)
    d) x²– 4x + 3
    =x^2-4x+4-1
    =(x-2)^2-1^2
    =(x-2+1)(x-2-1)
    =(x-1)(x-3)

Leave a reply

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

Tuyết Nga

About Tuyết Nga