santefesharks13
santefesharks13
26-01-2018
Mathematics
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3a (a^2-3a+4) -4 (3a^3-2a^2)
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Аноним
Аноним
26-01-2018
3a(a^2 - 3a + 4) - 4(3a^3 - 2a^2)
= 3a^3 - 9a^2 + 12a - 12a^3 + 8a^2
= -9a^3 - a^2 + 12a
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