Mathematics
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OpenStudy (anonymous):
-16x^4-32x^3-80^2 factoring
help asap please
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OpenStudy (anonymous):
What common factors do you see?
OpenStudy (anonymous):
Let's not just toss out the answer, or we'll have ten more problems like this to do.
OpenStudy (anonymous):
i dont even know how that person did that, i need explanation
OpenStudy (anonymous):
oh shoot i meant 80x^2
OpenStudy (texaschic101):
you need to find a common factor that will go into each of the numbers
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OpenStudy (anonymous):
8x?
OpenStudy (anonymous):
i wasnt tryna be rude or start anything i was js
OpenStudy (anonymous):
nooooo wait16x?
OpenStudy (texaschic101):
try -16x^2
OpenStudy (anonymous):
You can always divide out a factor and see whether there still is one. What trinomial do you get after removing the common factors?
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OpenStudy (anonymous):
grr, your right,
OpenStudy (anonymous):
x^2-16x-5?
OpenStudy (anonymous):
i mean x^2+2x-5
OpenStudy (anonymous):
ok
OpenStudy (anonymous):
oh ok, ya the first one confused me
but yah
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OpenStudy (anonymous):
yah
OpenStudy (anonymous):
nope u lost me, the drawing confused me
OpenStudy (anonymous):
May I step in?
OpenStudy (anonymous):
sure
OpenStudy (anonymous):
\[-16x^4-32x^3-80x^2=-16(x^2+2x^3+5)\]
Multiply it out to test it. Then tell me if you follow so far.
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OpenStudy (anonymous):
i follow
OpenStudy (anonymous):
i give up
OpenStudy (anonymous):
well i really need to know this its just confusing with different people telling me different stuff
OpenStudy (anonymous):
I left out the x^2. Let me fix it.
OpenStudy (anonymous):
\[-16x^4-32x^3-80x^2=-16x^2(x^2+2x+5)\]
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OpenStudy (anonymous):
@numb3r1 i follow now
OpenStudy (anonymous):
@Loser66 i feel like you are blowing things out of proportion thank you for ur help
OpenStudy (anonymous):
OK, so keep the 16x^2 off to the side. Can the trinomial be factored, either manually or with the quadratic formula?