展開する (f(x)=0.5x^2-k(x)x-8k(x)(x)^3x-k(x))k(x)

解

展開する

(f (x) = 0.5 x^{2} - k (x) x - 8 k (x) (x)^{3} x - k (x)) k (x)

k (x) f (x) = 0.5 x^{2} - x k (x)^{2} - 8 x^{4} k (x)^{2} - k (x)^{2}

解答ステップ

(f (x) = 0.5 x^{2} - k (x) x - 8 k (x) (x)^{3} x - k (x)) k (x)

= (0.5 = x^{2} f (x) - x k (x) - 8 (x)^{3} x k (x) - k (x)) k (x)

括弧を分配する

k (x) f (x) = 0.5 x^{2} + k (x) (- k (x) x) + k (x) (- 8 k (x) (x)^{3} x) + k (x) (- k (x))

マイナス・プラスの規則を適用する

+ (- a) = - a

k (x) f (x) = 0.5 x^{2} - x k (x) k (x) - 8 (x)^{3} x k (x) k (x) - k (x) k (x)

拡張

0.5 x^{2} - x k (x) k (x) - 8 (x)^{3} x k (x) k (x) - k (x) k (x) : 0.5 x^{2} - x k (x)^{2} - 8 x^{4} k (x)^{2} - k (x)^{2}

k (x) f (x) = 0.5 x^{2} - x k (x)^{2} - 8 x^{4} k (x)^{2} - k (x)^{2}