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

Toán Lớp 8: (5x-2)(x+1)-(x-3)(5x+1)-17(x+3)

Toán Lớp 8: (5x-2)(x+1)-(x-3)(5x+1)-17(x+3)

Comments ( 2 )

  1. Giải đáp:
    (5x-2)(x+1)-(x-3)(5x+1)-17(x+3)
    = 5x^2 + 3x – 2 – 5x^2 + 14x + 3 – 17x – 51
    = -50

  2. Giải đáp+Lời giải và giải thích chi tiết:
    $(5x-2)(x+1)-(x-3)(5x+1)-17(x+3)$
    $=5x²+5x−2x−2−(5x²+x−15x−3)−17x−51$
    $=5x²+5x−2x−2−5x²-x+15x+3−17x−51$
    $=−50$
            Chúc bn hc tốt????
                  $\text{#LinhSad}$
     

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

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