化简 (sqrt(a+5))(sqrt(a)-5)

解答

化简

(a + 5) (a - 5)

(a - 5) a + 5

求解步骤

(a + 5) (a - 5)

使用法则:

(a) = a

(a + 5) = a + 5

= a + 5 (a - 5)

= (a - 5) a + 5

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