化简:1.(根号a+根号b-根号c)(根号a-根号b-根号c)2.1÷(1\根号2-1\根号3)
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化简:1.(根号a+根号b-根号c)(根号a-根号b-根号c)2.1÷(1\根号2-1\根号3)
化简:1.(根号a+根号b-根号c)(根号a-根号b-根号c)
2.1÷(1\根号2-1\根号3)
化简:1.(根号a+根号b-根号c)(根号a-根号b-根号c)2.1÷(1\根号2-1\根号3)
(√a+√b-√c)(√a-√b-√c)
=(√a-√c+√b)(√a-√c-√b)
=(√a-√c)²+(√b)²
=a-2ab+c+b
1÷(1/√2-1/√3)
=1÷(√3-√2)/√6
=1×√6/(√3-√2)
=√6(√3+√2)/(√3-√2)(√3+√2)
=3√2+2√3