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OpenStudy (anonymous):
(-4x^2)(-2x^-2)
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OpenStudy (mertsj):
-8
OpenStudy (anonymous):
+8
OpenStudy (anonymous):
can you explain?
OpenStudy (mertsj):
Yep +8 I didn't see that one negative sign.
OpenStudy (anonymous):
x^2 and x^-2 cancel out because they are the reciprocals. So, you have -4 and -2 let. When you multiply them, you get +8.
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OpenStudy (anonymous):
and the x's cancel out as well?
OpenStudy (mertsj):
|dw:1327110637459:dw|
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