I never usually have a problem with it but this threw me because of the y terms.(adsbygoogle = window.adsbygoogle || []).push({});

x^4 + 2x^2 + y^4 -2y^2 + 3

i reduced it to

(x^2 + 1)^2 -1 + (y^2 -1)^2 -1 +3

=(x^2 + 1)^2 + (y^2 -1)^2 +1

but the question asks for "the smallest value (for real x and y)"

although judging by the answer to the last question, its the smallest y value.

how do i determin the value?

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# Homework Help: Completing The Square

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