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OpenStudy (anonymous):
Please help =*(
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OpenStudy (anonymous):
If \[f(x)=12-\frac{ x ^{2} }{ 2 }\] and f(2k)=2k what is one possible value for k?
OpenStudy (anonymous):
solve 2k = 12 - (2k)^2/2
OpenStudy (anonymous):
y cant the answer be 5?
OpenStudy (anonymous):
probably because you solved it wrong.
OpenStudy (anonymous):
k = -3 or 2 https://www.wolframalpha.com/input/?i=2k+%3D+12+-+%282k%29%5E2%2F2
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OpenStudy (anonymous):
|dw:1435945239538:dw|
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