1) D= 36+288= 324
x1= (-6+18)/18= 12/18= 2/3
x2= (-6-18)/18= -4/3
2) D= 25-16= 9
x1= (5+3)/2= 4
x2= (5-3)/2= 1
3) D= 9+40= 49
x1= (-3+7)/4= 1
x2= (-3-7)/4= -2,5
4) D= 100+300= 400
x1= (10+20)/50= 3/5
x2= (10-20)/50= -1/5
5) D= 9+40= 49
x1= (3+7)/2= 5
x2= (3-7)/2= -2
6) D= 49+120= 169
x1= (7+13)/10= 2
x2= (7-13)/10= -0,6
1) D= 36+288= 324
x1= (-6+18)/18= 12/18= 2/3
x2= (-6-18)/18= -4/3
2) D= 25-16= 9
x1= (5+3)/2= 4
x2= (5-3)/2= 1
3) D= 9+40= 49
x1= (-3+7)/4= 1
x2= (-3-7)/4= -2,5
4) D= 100+300= 400
x1= (10+20)/50= 3/5
x2= (10-20)/50= -1/5
5) D= 9+40= 49
x1= (3+7)/2= 5
x2= (3-7)/2= -2
6) D= 49+120= 169
x1= (7+13)/10= 2
x2= (7-13)/10= -0,6