解方程和不等式(1)根号3(x-根号3)=3 (2)(根号2-根号5)x>3(3)根号3(1-2根号2)x=-2根号2
2个回答

(1)根号3(x-根号3)=3

x-√3=√3;

x=2√3;

(2)(根号2-根号5)x>3

x<3/(√2-√5)=3(√2+√5)/(2-5)=-(√5+√2);

(3)根号3(1-2根号2)x=-2根号2

x=-2√2/√3(1-2√2)=-2√6(1+2√2)/3(1-2√2)(1+2√2)=-2(√6+4√3)/3(1-8)=2(√6+4√3)/21;

(4)根号8x+4根号3>2根号3x

2√2x-2√3x>-4√3;

x<(-4√3)/(2√2-2√3)=(-4√3)(2√2+2√3)/(8-12)=2√6+6;

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