October 2020 1 68 Report
A expressao (X - 3y)² e igual a 

a)x² - 9y²
b)x² - 3y²
c)x² - 6xy+9y²
d)x² - 6xy+3y²









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2X+1+X+2X+X+2+X+1+X e igual a?  
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Na igualdade A=t.(1+m/100)² considere t= 10³, m=150 e n=2.Nessa condicao o valor de A e= a)5026b)5250c)6520d)6250
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Dividindo o polimonio 12a⁴b²-28a²b²+4ab³ por 4ab encontramos como quociente a)3a³b-7ab+b²b)3a³b-7ab-b²c)3a³b²-7ab+b²d)3ab³+7ab+b²
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