You can
put this solution on YOUR website!what is the difference between -x squared and (-x) squared.
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Try it with a number:
Let x=2
-2^2 = -4
but
(-2)^2 =+4
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Graphing y = -x^2 you get:

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Graphing y = (-x)^2 you get:

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Cheers,
Stan H.