а) D= 289+152= 441
x1= (-17+21)/2= 2
x2= (-17-21)/2= -19
б) D= 121+168= 289
x1= (11-17)/14= -3/7
x2= (11+17)/14= 2
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а) D= 289+152= 441
x1= (-17+21)/2= 2
x2= (-17-21)/2= -19
б) D= 121+168= 289
x1= (11-17)/14= -3/7
x2= (11+17)/14= 2