展開する (P(x)+q(x))left(q(x)-R(x))

解

展開する

(P (x) + q (x)) l e f t (q (x) - R (x))

e lP x^{2} q f t - e lP x^{2} f tR + e l x^{2} q^{2} f t - e l x^{2} q f tR

解答ステップ

(P (x) + q (x)) l e f t (q (x) - R (x))

= e l f t (P (x) + (x) q) ((x) q - (x) R)

拡張

(P (x) + q (x)) (q (x) - R (x)) : P x^{2} q - P x^{2} R + x^{2} q^{2} - x^{2} qR

= l e f t (P x^{2} q - P x^{2} R + x^{2} q^{2} - x^{2} qR)

拡張

l e f t (P x^{2} q - P x^{2} R + x^{2} q^{2} - x^{2} qR) : e lP x^{2} q f t - e lP x^{2} f tR + e l x^{2} q^{2} f t - e l x^{2} q f tR

= e lP x^{2} q f t - e lP x^{2} f tR + e l x^{2} q^{2} f t - e l x^{2} q f tR