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OpenStudy (anonymous):
13x² - (10x² + 9) Is 3x² + 9 correct?
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OpenStudy (anonymous):
flawless!
OpenStudy (anonymous):
I finally get it! Thank you UditKulka!
OpenStudy (anonymous):
nope nope it should be -9
OpenStudy (anonymous):
it is because -(+) is -
OpenStudy (anonymous):
3x2-9
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OpenStudy (anonymous):
else everything is good!
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