Finding Absolute Extrema

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[sarablack]

Thank you very much. You've made it so incredibly clear.

[letthekidssmile]

(-x^2) is a positive number; -(x^2) is not, because x^2 is positive and when x^2 times the - sign outside, it becomes negative.

On a side note, thank you for making this video. This is a really good last minute revision before a test. :)

[AlyA-wfcy]

Hi. Maybe you forgot that any negative number squared is a positive number. Recheck your math, bro.