KamisiaLJohnson
KamisiaLJohnson
16-05-2017
Mathematics
contestada
Subtract. (5r2+5r+9)–(3r+2)
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Аноним
Аноним
16-05-2017
(5r2+5r+9)–(3r+2)
You have a minus before the parentesis, so you change the sign of the terms in the parentesis
5r^2+5r+9-3r-2
5r^2+(5-3)r+7
5r^2+2r+7
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