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OpenStudy (anonymous):
(1 - 7x)(1 + 9x)
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OpenStudy (anonymous):
1+2x-63x
OpenStudy (anonymous):
\[(1 - 7x)(1 + 9x)=1+9x-7x-63x^2=-63x^2+2x+1\]
OpenStudy (anonymous):
i mean 63x^2
OpenStudy (anonymous):
yeah what tomas said
OpenStudy (lilg132):
1 -7x + 9x -63x^2
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OpenStudy (lilg132):
-63^2 + 2x + 1
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