1) a-4b/根号a-(2根号b) 2) (根号6)+(4根号3)+(3根号2)/(根号6+根号3)(根号3+根号2)

问题描述:

1) a-4b/根号a-(2根号b) 2) (根号6)+(4根号3)+(3根号2)/(根号6+根号3)(根号3+根号2)
1) a-4b/根号a-(2根号b)
2) (根号6)+(4根号3)+(3根号2)/(根号6+根号3)(根号3+根号2)

原式=(a+2√b)(a-2√b)/(a-2√b)=a+2√b原式=[(√6+√3)+(3√3+3√2)]/(√6+√3)(√3+√2)=(√6+√3)/(√6+√3)(√3+√2)+(3√3+3√2)/(√6+√3)(√3+√2)=1/(√3+√2)+3/(√6+√3)=(√3-√2)+(√6-√3)=√6-√2...