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

Toán Lớp 8: x(x+2)+x(x-3)-3(x+2) Phân tích đa thức thành nt

Toán Lớp 8: x(x+2)+x(x-3)-3(x+2)
Phân tích đa thức thành nt

Comments ( 2 )

  1. $x(x+2)+x(x-3)-3(x+2)$
    $=(x+2)(x-3)+x(x-3)$
    $=(x-3)(x+2+x)$
    $=(x-3)(2x+2)$
    $=2(x+1)(x-3)$
    @Nobitao@
     

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