Hi all, I am just new to this site and it looks like such an awesome resource. Can anyone help me with this??? If x + y = 1 and x³ + y³ = 19, find the value of x² + y²
Last edited by Jameson; Apr 15th 2009 at 05:31 PM.
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Originally Posted by Joel Hi all, I am just new to this site and it looks like such an awesome resource. Can anyone help me with this??? If x + y = 1 and x³ + y³ = 19, find the value of x² + y² and after expanding and simplifying, You should be able to finish.
Hello, Joel! Welcome aboard! I have a back-door approach . . . If . . find the value of Cube [1]: . Square [1]: . . . . . . . . . . . . . . . . . . . . . . . . . . . Therefore: . This method is guarenteed to impress/surprise/terrify your teacher. .
Originally Posted by Soroban Hello, Joel! Welcome aboard! I have a back-door approach . . . I like your solution. I wish I had thought about the problem a bit more before going down the obvious path.
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