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correct calculator entry

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hey...

when i want to sub value x=2 into y=-x^2, which of these would i press into my calculator:

y=-2*(-2)^2

y=-2*(-2^2)?

Or, are these methods incorrect and do I need another one?
 Aug 24, 2013

2+0 Answers

 #1
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if sub=substitute, then use y=(-(2))^2
 Aug 24, 2013
 #2
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Hm are you sure about that?
I would have said that, if the equation had been y = (-x)^2.
As it is y = -x^2, i would guess what is meant is - (x^2).
greez silentbat
 Aug 25, 2013

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