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113. (Ufmg) Considere os polinômios p ( x ) = ax^4 + (2a - 3b)x^2 + (a + b + 4c)x - 4bcd e q ( x ) = 6x^2 + 18x + 5, em que a , b , c e d são números reais.
Sabe-se que p ( x ) = q ( x ) para todo x ∈ \text{IR}. Assim sendo, o número d é igual a

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