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OpenStudy (anonymous):
How do I solve this? Decide whether the given number is a zero of the polynomial -2; f(x)=x^4+3x^2-28 yes or no
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OpenStudy (mayankdevnani):
f(-2)=(-2)^4+3(-2)^2-28 can you solve this?
OpenStudy (mayankdevnani):
can you solve this? @brandonloves
OpenStudy (mayankdevnani):
just simplify it and if you got answer f(-2)=0 so answer is yes and if it is not the answer is no ok @brandonloves
OpenStudy (anonymous):
ok, I should have realized that. usually "x = -2" is given, so I was thrown by that. I got 0, so Yes. Thanks @mayankdevnani
OpenStudy (mayankdevnani):
welcome...
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