Hi,

Any advice with the problem below would be greatly appreciated.

X = √a + 1/√a + 1; X>0; express X - 2X in terms of a.

btw, answer = a + 1 + 1/a; how do you derive it though?

Thank you,

Sean.

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- June 11th 2013, 01:43 PMSeaniboySolving equation involving surds
Hi,

Any advice with the problem below would be greatly appreciated.

X = √a + 1/√a + 1; X>0; express X - 2X in terms of a.

btw, answer = a + 1 + 1/a; how do you derive it though?

Thank you,

Sean. - June 11th 2013, 02:33 PMShakarriRe: Solving equation involving surds
X-2X is just -X, please recheck the question.

- June 11th 2013, 02:37 PMHallsofIvyRe: Solving equation involving surds
Where you write "1/√a+ 1" do you mean (1/√a)+ 1 or 1/(√a+ 1)?

- June 11th 2013, 05:17 PMSorobanRe: Solving equation involving surds
Hello, Seaniboy!

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. . . . . . - June 12th 2013, 08:50 AMSeaniboyRe: Solving equation involving surds
Thanks for your help people. Apologies for the symbols in the question. I must use an 𝑥 instead of X next time!

- June 12th 2013, 08:53 AMSeaniboyRe: Solving equation involving surds
Hi, I see what you mean. I am trying to find symbols to insert to make things a little clearer. In english it is X = √a + a fraction in the form of 1 over √a + 1. Thanks for having a look at the problem anyway.