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ok so when you square a neg. or pos. number it is always even but then you have the negitive on the outside of the x when you finish squaring

apagan21
When you plug -x in for x it’ll look like this -(-x)^2 so when you square the -x it doesn’t change the sign of x because of the negative sign outside of the parentheses so it’s still a negative x.
So it’ll look like this
F(x)= -x^2-1
F(-x)= -(-x)^2-1
F(-x)= -x^2-1

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