1)х1=-1, х2=19/21
2)х1=-12, х2=-10
3)х1=-5/7, х2= 1
4) х1= -1, х2=1/7
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Answers & Comments
1)х1=-1, х2=19/21
2)х1=-12, х2=-10
3)х1=-5/7, х2= 1
4) х1= -1, х2=1/7