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

Toán Lớp 8: a)(4x-5).(6x+3) b)(3x+5).(9x-1)

Toán Lớp 8: a)(4x-5).(6x+3)
b)(3x+5).(9x-1)

Comments ( 2 )

  1. a)
    (4x-5)(6x+3)
    =24x^2+12x-30x-15
    =24x^2-18x-15
    b)
    (3x+5)(9x-1)
    =27x^2-3x+45x-5
    =27x^2+42x-5

  2. $Bạn^{}$ $tham^{}$ $khảo^{}$ $nhé^{}$
    $Chúc^{}$ $bạn^{}$ $học^{}$ $tốt^{}$
    $Chủ^{}$ $tus^{}$ $cho^{}$ $mình^{}$ $xin^{}$ $câu^{}$ $trả^{}$ $lời^{}$ $hay^{}$ $nhất^{}$ $nhaaa^{}$
    $\#Lynn$
     
     

    toan-lop-8-a-4-5-6-3-b-3-5-9-1

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

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