【確認】多項式の加法・減法(縦書き)
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- 解答数:4
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確認問題
次の計算をし,ア~シに当てはまる数や数式を半角英数字で入力しなさい。
-
\[ \begin{array}{rrcrcr}
& 4x & – & y & – & 8 \\
+) & 6x & – & 2y & + & 5 \\ \hline
& \fbox{ア}x & – & \fbox{イ}y & – & \fbox{ウ}
\end{array} \] -
\[ \begin{array}{rrcrcr}
& 2x & – & 5y & – & 3 \\
-) & -4x & + & 3y & + & 5 \\ \hline
& \fbox{エ}x & – & \fbox{オ}y & – & \fbox{カ}
\end{array} \] -
\[ \begin{array}{rrcrcr}
& -10x^2 & + & 6x & – & 9 \\
+) & 5x^2 & – & 4x & + & 7 \\ \hline
& \fbox{キ}x^2 & + & \fbox{ク}x & – & \fbox{ケ}
\end{array} \] -
\[ \begin{array}{rrcrcr}
& -9x^2 & + & 5x & – & 8 \\
-) & 4x^2 & – & 3x & + & 6 \\ \hline
& \fbox{コ}x^2 & + & \fbox{サ}x & – & \fbox{シ}
\end{array} \]