I don't know how to go on about solving this...

IT asks Use factoring to solve the equation for the real values of the variable

y^4 - 26y^2 + 25 = 0

I know how to factor but this one is throwing me off...

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- Oct 2nd 2008, 08:33 AMciviliamHW Question Factoring
I don't know how to go on about solving this...

IT asks Use factoring to solve the equation for the real values of the variable

y^4 - 26y^2 + 25 = 0

I know how to factor but this one is throwing me off... - Oct 2nd 2008, 08:50 AMSean12345
Hi civiliam,

We have . Notice that this is a quadratic in , thus if we let we can re-write the equation as . Now this is a fairly routine quadratic since and thus we can conclude that , . Since we can say , and therefore the four roots of the equation are , .

Hope this helps. - Oct 2nd 2008, 08:56 AMciviliam
thank you so much that's perfect