Register Now

Login

Lost Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

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

Toán Lớp 8: Phân tích đa thức thành nhân tử . `5“x^3` `-` `7“x^2“+“10“x` `-` `14`

Toán Lớp 8: Phân tích đa thức thành nhân tử .
5x^3 – 7x^2+10x – 14

Comments ( 2 )

  1.     5x³ – 7x² + 10x – 14
    = 5x³ + 10x – 7x² – 14
    = 5(x³ + 2x) – 7(x² + 2)
    = 5x(x² + 2) – 7(x² + 2)
    = (5x – 7)(x² + 2)

  2. #andy
    \[\begin{array}{l}
    5{x^3} – 7{x^2} + 10x – 14\\
     \Leftrightarrow \left( {5{x^3} + 10x} \right) + \left( { – 7{x^2} – 14} \right)\\
     \Leftrightarrow 5x\left( {{x^2} + 2} \right) – 7\left( {{x^2} + 2} \right)\\
     \Leftrightarrow \left( {5x – 7} \right)\left( {{x^2} + 2} \right)
    \end{array}\]

Leave a reply

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