Toán Lớp 8: (x^3+64^3):(x+4y)
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Toán Lớp 8: (x^3+64^3):(x+4y)
Cần giải gấp ạ
Vote 5 saoooo
Comments ( 2 )
\left( {{x^3} + 64{y^3}} \right):\left( {x + 4y} \right)\\
= \left[ {{x^3} + {{\left( {4y} \right)}^3}} \right]:\left( {x + 4y} \right)\\
= \left( {x + 4y} \right)\left( {{x^2} – 4xy + 16{y^2}} \right):\left( {x + 4y} \right)\\
= {x^2} – 4xy + 16{y^2}
\end{array}$