You have : , Calculate :
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Hello dhiab Originally Posted by dhiab You have : , Calculate : B is not a real number. Are you sure you have the question correct? Grandad
Originally Posted by Grandad Hello dhiabB is not a real number. Are you sure you have the question correct? Grandad Hello : THANK YOU
Hello dhiab I'm not sure what form you want the answer in - I assume you want it as a single radical. How does this look? Note first that Let Then Noting that , this simplifies to , using the quadratic formula This then simplifies to Grandad
Hello, everyone! Grandad is right . . . I misread the problem . . . *blush* As Emily Litella would say: "Never mind."
Last edited by Soroban; July 10th 2009 at 06:51 AM.
Hello Soroban Originally Posted by Soroban ... Let ... But we are asked to find Grandad
Hello, Originally Posted by Grandad Note first that Let Then ... hence there is no need for the quadratic formula. Originally Posted by Grandad Noting that , this simplifies to I think the last equation is not correct. We have and the positive root of is so we get which matches the solution given above.
Hello everyone Sorry flyingsquirrel, but you haven't read the question correctly - you haven't got enough square root signs Originally Posted by flyingsquirrel Hello, ... hence there is no need for the quadratic formula. ... It is that equals , not . So my original answer stands. Grandad
Originally Posted by Grandad Sorry flyingsquirrel, but you haven't read the question correctly - you haven't got enough square root signs You're right Grandad, I'm sorry.
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