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

Toán Lớp 8: (6x_5).(x+8)_(3x_1).(2x+3)_9.(4x_3) giải giùm mình với

Toán Lớp 8: (6x_5).(x+8)_(3x_1).(2x+3)_9.(4x_3)
giải giùm mình với

Comments ( 2 )

  1. (6x-5)(x+8)-(3x-1)(2x+3)-9(4x-3)
    =6x^2+48x-5x-40-6x^2-9x+2x+3-36x+27
    =(6x^2-6x^2)+(48x-5x-9x+2x-36x)-(40-27-3)
    =-10
     

  2.     (6x-5)(x+8)-(3x-1)(2x+3)-9(4x-3)
    = (6x²+48x-5x-40)-(6x²+9x-2x-3)-(36x-27)
    = 6x²+43x-40-6x²-7x+3-36x+27
    = -10
    Chúc bạn học tốt, cho mình CTLHN+5*+tim nha!!!

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

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