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mathcentration
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A  B 
x^2 + 2x +1 = 0  x = 1 
x^2  x  6 = 0  x = 2, 3 
x^2  7x + 6 =0  x = 1, 6 
x^3 +5x^2 +4x =0  x = 0, 1, 4 
x^2  1 = 0  x = 1, 1 
x^2 = 4  x = 2, 2 
x^3 = 49x^2  x = 0, 7, 7 

 