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

Toán Lớp 8: (x-3)(x²+2x-5) giúp em vs ạ 50 đ

Toán Lớp 8: (x-3)(x²+2x-5) giúp em vs ạ 50 đ

Comments ( 2 )

  1. y10000
    •(x-3)(x²+2x-5)
    =x.x²+x.2x+x.(-5)-3.x²-3.2x-3.(-5)
    =x³+2x²-5x-3x²-6x+15
    =x³-x²-11x+15

  2. (x-3)(x^2+2x-5)
    =x.(x^2+2x-5)-3(x^2+2x-5)
    =x^3+2x^2-5x-3x^2-6x+15
    =x^3-x^2-11x+15
    Cho mk xin hay nhất please
    Thank you

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