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: Tính a)( 2x + 1) ² b) ( 3 – 2y)² c) (4x -1 )²

Toán Lớp 8: Tính
a)( 2x + 1) ² b) ( 3 – 2y)² c) (4x -1 )² d) x ³ + 27 e) 8x ³ – 1 f) ( x – 3y) ³

Comments ( 2 )

  1. $a)(2x+1)^{2}$
    $=4x^{2}+4x+1$
    $b)(3-2y)^{2}$
    $=9^{}-12y+4y^2$
    $c)(4x-1)^{2}$
    $=16x^{2}-8x+1$
    $d)x^{3}+27$
    $=(x+3)(x^{2}-3x+9)$
    $e)8x^{3}-1$
    $=(2x-1)(4x^{2}+2x+1)$
    $f)(x-3y)^{3}$
    $=x^{3}-9x^2y+27xy^2-27y^3$
    Chúc bạn học tốt !!!!

Leave a reply

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