Colgio Estadual Professora Simone Simes NeriAluno (a)_______________________________________________________Srie: _____Prof. Alex LeoData: ___/____/_______

Lista de Exerccios IV UNIDADE

1. Identifique os coeficientes a, b e c destas equaes:

a) 3x2 12 = 0 _________________________b) 3x2 21x = 0 ________________________c) 3x 7x2 + 5 = 0 ______________________d) X2 5x + 6 = 0 _______________________e) 6x2 x 1 = 0 _______________________f) 7x2 x = 0 __________________________g) X2 36 = 0 __________________________

2. Escreva a equao ax2 + bx + c = 0, em que:

a) a = 5 , b = - 1 e c = 0 __________________________b) a = 4, b = 0 e c = - 9 __________________________c) a = - 3, b = 0 e c = 4 __________________________d) a = 1, b = - 2 e c = 3 __________________________e) a = 7, b = 0 e c = 0 __________________________f) a = 1, b = - 6 e c = 9 __________________________

3. Classifique as equaes como completas ou incompletas:

a) 3x2 + 5x = 0 ______________________b) 3x2 + 9 = 0 ______________________c) X2 x = 0 ________________________d) X2 + 7x + 12 = 0 ___________________e) 6x2 = 0 _________________________f) X + x2 6 = 0 _____________________g) 4 + x2 4x = 0 ____________________