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OpenStudy (anonymous):
Easy question? I keep changing the signs wrong so I need help. f(-x)=(-x)^4-(-x)^3+7(-x)^2-9(-x)-18. The original equation was x^4-x^3+7x^2-9x-18. I had to replace x with -x.
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OpenStudy (amistre64):
odd degrees change signs ... even degrees do not
OpenStudy (amistre64):
x^4 -x^3 +7x^2 -9x -18 ^ ^ x^4 +x^3 +7x^2 +9x -18
OpenStudy (anonymous):
Ohhh. That helps with my other questions I was doing! Thank you so much!
OpenStudy (amistre64):
youre welcome
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