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anonymous
 3 years ago
help me on a question please...
x= 1/2 +1/2sqrt5
show that...
anonymous
 3 years ago
help me on a question please... x= 1/2 +1/2sqrt5 show that...

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anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0\[x=\frac{ 1 }{ 2 } + \frac{ 1 }{ 2 }\sqrt{5}\]

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0\[\frac{ x^{2}+x ^{2} }{ xx ^{1} }=3\]

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0\[x=\frac{1}{2}+\frac{\sqrt{5}}{2}\] \[x=\dfrac{1+\sqrt{5}}{2}\]

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0\[x=\frac{1+\sqrt{5}}{2}\\ \frac{1}{x}=\frac{2}{1+\sqrt{5}}\times\frac{\sqrt{5}1}{\sqrt{5}1}=\frac{2\sqrt{5}1}{4}=\frac{\sqrt{5}1}{2}\] then \[x\frac{1}{x}=1\qquad(1)\] square both side to get: \[x^2+\frac{1}{x^2}2=1\\ x^2+\frac{1}{x^2}=3\qquad(3)\] now divide (3) by (1) to get the result

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0\[x^2+x^{2}=3x3x^{1}\] Multiply both sides by x^2. \[x^4+1=3x^33x\] \[x^43x^3+3x+1=0\]

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0i dont get it... both of you :P

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0first, we find the value of \[x\frac{1}{x}\]

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0You just sub in \[\frac{1+\sqrt{5}}{2}\] into the original equation....

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0And you prove that the LHS=RHS.

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0but no matter how manytimes i try i can never get it to equal 3

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Use a calculator if you can't do it....Use a calculator to solve the denominator first. You get one as the denominator...

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Jeez, you have a tool that can help you but you don't want to use it.

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0You get 3 as the denominator when you plug the values into the numerator...

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0we need to show our working our using our skill of indices laws... But i dont have much

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0There's no indice work when you learn that \[x^{1}=\frac{1}{x^1}\] \[x^{2}=\frac{1}{x^2}\]

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Dude, now once you see the letter x, put that big fat fraction into your calculator and get your values...

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0I can solve that by hand but that will take me ages, to write it on the computer, so no thank you...

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0i hope it is can help you
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