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OpenStudy (anonymous):
(-2x) (-4y) - (-9x) (10y)
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OpenStudy (anonymous):
open the brackets by multiplying
OpenStudy (anonymous):
then sum the like terms
OpenStudy (anonymous):
- * - = +
OpenStudy (anonymous):
use..thhis concept here
OpenStudy (anonymous):
8xy + 90xy = 98xy...
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