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pypirka1
@pypirka1
July 2022
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Решить уравнение х^2-6х=14х-18-х^2
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litanalove
X² -6x -14x +18 +x² =0
2x² -20x +18 =0
D=400 -144 =256 =16²
x1 =(20 -16)/4 =1
x2 =(20 +16)/4 =9
ответ: x =1, x =9
D=b² -4ac(a=2,b= -20,c=18)
x1,x2=(-b+-корень изD)/2a
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Answers & Comments
2x² -20x +18 =0
D=400 -144 =256 =16²
x1 =(20 -16)/4 =1
x2 =(20 +16)/4 =9
ответ: x =1, x =9
D=b² -4ac(a=2,b= -20,c=18)
x1,x2=(-b+-корень изD)/2a