Question

Упростите выражение

Answer 1

$frac{1}{ sqrt{3}+2 }+ frac{13}{4+ sqrt{3}}- frac{11}{ 1-2sqrt{3} }= \ \ =frac{1(sqrt{3}-2 )}{ (sqrt{3}+2)(sqrt{3}-2 ) }+ frac{13(4- sqrt{3})}{(4+ sqrt{3})(4- sqrt{3})}- frac{11(1+2 sqrt{3})}{ (1-2sqrt{3})(1+2 sqrt{3}) }= \ \ frac{1(sqrt{3}-2 )}{ 3-4 }+ frac{13(4- sqrt{3})}{16-3}- frac{11(1+2 sqrt{3})}{ 1-12}=frac{1(sqrt{3}-2 )}{ -1 }+ frac{13(4- sqrt{3})}{13}- frac{11(1+2 sqrt{3})}{ -11}= \ \ =-( sqrt{3}-2 )+4-sqrt{3}+1+2sqrt{3}=$ $=- sqrt{3}+2 +4-sqrt{3}+1+2sqrt{3}=7$

Answer 2

Ничоси ты,спасибо огромное !

Answer 3

))