yuli9
yuli9
18-08-2016
Mathematics
contestada
(-a^2+1)-(a^2-3)+(5a^2-6a^2-6a+7
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Panoyin
Panoyin
18-08-2016
(-a^2 + 1) - (a^2 - 3) + (5a^2 - 6a^2 - 6a + 7)
(-a^2 - a^2 + 5a^2 - 6a^2) - 6a + 1 + 3 + 7
(-2a^2 - a^2) - 6a + 4 + 7
-3a^2 - 6a + 11
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