-3х^2+7х+1=-5
-3х^2+7х+6=0
D=49=72=121
X=(-7+-11)/-6= 3, -2/3
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-3х^2+7х+1=-5
-3х^2+7х+6=0
D=49=72=121
X=(-7+-11)/-6= 3, -2/3