جواب کار در کلاس صفحه 129 درس 7 ریاضی نهم (عبارت های گویا)

الف

\(\begin{array}{l}\,\,\,6{x^3} - 19{x^2} + 16x - 4\;\,\underline {\left| {2 - x\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \right.} \;\\\underline { - 6{x^3} + 12{x^2}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} - 6{x^2} + 7x - 2\\\,\,\,\,\,\,\,\,\,\, \,\,\,\,\,- 7{x^2} + 16x - 4\\\underline {\,\,\,\,\,\,\,\,\,\, \,\,\,\,\,+ 7{x^2} - 14x\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,2x - 4\\\underline {\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, - 2x + 4\,\,\,\,\,} \\\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,0\end{array}\)

ب

\(\begin{array}{l} - {x^3} - 12 + 8x\;\,\,\,\underline {\left| {\;x + 6\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \right.} \\\underline { + {x^3} + 6{x^2}\,\,\,\,\,\,\,\,\,\,} \,\,\,\,\, - {x^2} + 6x - 28\\\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,6{x^2} + 8x - 12\\\underline {\,\,\,\,\,\,\,\,\,\,\,\,\, - 6{x^2} - 36x\,\,\,\,\,\,\,\,\,\,\,\,} \\\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, - 28x - 12\\\underline {\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, + 28x + 168\,} \\\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,156\end{array}\)