Д = 49-40=9 Д>0
Следовательно:
Х1 = (7+3)/20 = 1/2= 0.5
Х2=(7-3)/20=1/5=0.2
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X^2-7x+10=0
X1=5
X2=2
В:5,2
Д = 49-40=9 Д>0
Следовательно:
Х1 = (7+3)/20 = 1/2= 0.5
Х2=(7-3)/20=1/5=0.2