展开 (12,-10)y(16,10)

解答

展开

(12, - 10) y (16, 10)

12 (16 \cdot 10,) y, - 10 (16 \cdot 10,) y

求解步骤

(12, - 10) y (16, 10)

= (12, - 10) (16 \cdot 10,) y

使用分配律:

a (b - c) = ab - a c

a = y (16, 10), b = 12,, c = 10

= y (16, 10) \cdot 12, - y (16, 10) \cdot 10

= 12 (16 \cdot 10,) y, - 10 (16 \cdot 10,) y

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