计算(a根号b+b根号a)(b根号a-a根号b)计算 (a根号b+b根号a)(b根号a-a根号b) (根号6-根号½)-(根号24+2根号二分之三)两题都要有过程 谢谢
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![计算(a根号b+b根号a)(b根号a-a根号b)计算 (a根号b+b根号a)(b根号a-a根号b) (根号6-根号½)-(根号24+2根号二分之三)两题都要有过程 谢谢](/uploads/image/z/2765621-29-1.jpg?t=%E8%AE%A1%E7%AE%97%EF%BC%88a%E6%A0%B9%E5%8F%B7b%2Bb%E6%A0%B9%E5%8F%B7a%EF%BC%89%EF%BC%88b%E6%A0%B9%E5%8F%B7a-a%E6%A0%B9%E5%8F%B7b%EF%BC%89%E8%AE%A1%E7%AE%97++%EF%BC%88a%E6%A0%B9%E5%8F%B7b%2Bb%E6%A0%B9%E5%8F%B7a%EF%BC%89%EF%BC%88b%E6%A0%B9%E5%8F%B7a-a%E6%A0%B9%E5%8F%B7b%EF%BC%89++++++%EF%BC%88%E6%A0%B9%E5%8F%B76-%E6%A0%B9%E5%8F%B7%26frac12%3B%EF%BC%89-%EF%BC%88%E6%A0%B9%E5%8F%B724%2B2%E6%A0%B9%E5%8F%B7%E4%BA%8C%E5%88%86%E4%B9%8B%E4%B8%89%EF%BC%89%E4%B8%A4%E9%A2%98%E9%83%BD%E8%A6%81%E6%9C%89%E8%BF%87%E7%A8%8B+%E8%B0%A2%E8%B0%A2)
计算(a根号b+b根号a)(b根号a-a根号b)计算 (a根号b+b根号a)(b根号a-a根号b) (根号6-根号½)-(根号24+2根号二分之三)两题都要有过程 谢谢
计算(a根号b+b根号a)(b根号a-a根号b)
计算 (a根号b+b根号a)(b根号a-a根号b)
(根号6-根号½)-(根号24+2根号二分之三)
两题都要有过程 谢谢
计算(a根号b+b根号a)(b根号a-a根号b)计算 (a根号b+b根号a)(b根号a-a根号b) (根号6-根号½)-(根号24+2根号二分之三)两题都要有过程 谢谢
1、(a根号b+b根号a)(b根号a-a根号b)=ab根号(ab)-a的平方b+ba的平方-ab根号(ab)=ba的平方-a的平方b
2、(根号6-根号½)-(根号24+2根号二分之三)=(根号6-二分之根号2)-(2根号6+根号6)=-二分之根号2-2根号6
(a根号b+b根号a)(b根号a-a根号b)
=(b根号a+a根号b)(b根号a-a根号b)
=(b根号a)²-(a根号b)²,[因为(a+b)(a-b)=a²-b²]
=b²a-a²b
=ab(b-a)
(根号6-根号½)-(根号24+2根号二分之三)
=[√6-√(1/2)...
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(a根号b+b根号a)(b根号a-a根号b)
=(b根号a+a根号b)(b根号a-a根号b)
=(b根号a)²-(a根号b)²,[因为(a+b)(a-b)=a²-b²]
=b²a-a²b
=ab(b-a)
(根号6-根号½)-(根号24+2根号二分之三)
=[√6-√(1/2)]-[√24+2√(3/2)]
=√6-√(2/4)-[√(4*6)+2√(3*2/4)]
=√6-(√2)/2-[2√6+2(√6)/2]
=√6-(√2)/2-3√6
=-2√6-(√2)/2
=-[4(√6)+(√2)]/2
收起
(1)用平方差公式
=ab^2-ba^2
(2)=根号6-根号2/2-2根号6-2根号6/3
=-5根号6/3-根号2/2