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OpenStudy (anonymous):
OpenStudy (isaiah.feynman):
Try this one if you have any questions lemme know.
OpenStudy (aonz):
so just sub -5 in and what do you get?
OpenStudy (anonymous):
\[f(x) = x^3+4x^2-10x+19\]
OpenStudy (anonymous):
is that the answer
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OpenStudy (anonymous):
No, I was just re-writing the question. You need to plug -5 in for x and calculate the answer.
OpenStudy (anonymous):
can u explain
OpenStudy (anonymous):
Does this help?
\[f(-5) = (-5)^3+4(-5)^2-10(-5)+19\]
OpenStudy (anonymous):
Evaluate one term at a time, then add and subtract.
OpenStudy (anonymous):
ok
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OpenStudy (anonymous):
I have the answer if you want to check it when you are ready.
OpenStudy (anonymous):
no dont tell me
OpenStudy (anonymous):
I'm not going to. If you post your answer, I'll tell you if I agree.
OpenStudy (anonymous):
44?
OpenStudy (anonymous):
That's not my answer. Let me recheck my arithmetic just to make sure...
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OpenStudy (isaiah.feynman):
@divagirl421 that's whats up
OpenStudy (anonymous):
am i right
OpenStudy (anonymous):
No, I don't think so. Let's go through it one step at a time:
\((-5)^3\) = ?
OpenStudy (anonymous):
-125
OpenStudy (anonymous):
Good.
\(4(-5^2)\) = ?
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OpenStudy (anonymous):
\(4(-5)^2\)
OpenStudy (anonymous):
100
OpenStudy (anonymous):
You always learn best by teaching and this is a prime example. You are correct with your answer of 44. I forgot that anything squared is positive. My sincere apologies.