DETERMINE AS RAÍZES DESTAS EQUAÇÕES: a) (x+3)²=49
B) (5x-4)² =9
C) (21x -7)²=0
D)x² -4x -96=0
E) x² -2x -48=0
F) x² +x -20=0
B) (5x-4)² =9
C) (21x -7)²=0
D)x² -4x -96=0
E) x² -2x -48=0
F) x² +x -20=0
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