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परिमेय संख्याओं `a` और `b` को ज्ञात कीजिएः `(sqrt(3)-1)/(sqrt(3)+1)+(sqrt(3)+1)/(sqrt(3)-1)=a+sqrt(3b)` |
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Answer» `(sqrt(3)-1)/(sqrt(3)+1)+(sqrt(3)-1)/(sqrt(3)+1)xx(sqrt(3)-1)/(sqrt(3)-1)=((sqrt(3)-1)^(2))/((sqrt(3))^(2)-1^(2))` `=(3+1-2sqrt(3))/2=(4-2sqrt(3))/2=2-sqrt(3)` `=(sqrt(3)+1)/(sqrt(3)-1)=(sqrt(3)+1)/(sqrt(3)-1)xx(sqrt(3)+1)/(sqrt(3)+1)=((sqrt(3)+1)^(2))/((sqrt(3))^(2)-(1)^(2))` `=(3+1+2sqrt(3))/(3-1)+(4+2sqrt(3))/2=2+sqrt(3)` `:. (sqrt(3)-1)/(sqrt(3)+1)+(sqrt(3)+1)/(sqrt(3)-1)=2-sqrt(3)+2+sqrt(3)=4` `4+(0)sqrt(3)=a+sqrt(3)b` `impliesa=4,b=0` |
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