化简 ((2/(x-12))+9(100-x))(x-4)

解答

化简

((\frac{2}{x - 12}) + 9 (100 - x)) (x - 4)

(\frac{2}{x - 12} + 900 - 9 x) (x - 4)

求解步骤

((\frac{2}{x - 12}) + 9 (100 - x)) (x - 4)

使用法则:

(a) = a

(\frac{2}{x - 12}) = \frac{2}{x - 12}

= (\frac{2}{x - 12} + 9 (100 - x)) (x - 4)

展开

9 (100 - x) : 900 - 9 x

= (\frac{2}{x - 12} + 900 - 9 x) (x - 4)

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