1.
125x^2=5
x^2=1/25
x=+0.2
x=-0.2
2.
x-6x^2=0
x(1-6x)=0
x=0
1-6x=0
x=1/6
3.
D=1-4*2*3=-23
нет корней
4.
D=1+4*5*6=121 √D=11
x1=1+11/-12=12/-12=-1
x2=1-11/-12=10/12=5/6
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Answers & Comments
1.
125x^2=5
x^2=1/25
x=+0.2
x=-0.2
2.
x-6x^2=0
x(1-6x)=0
x=0
1-6x=0
x=0
x=1/6
3.
D=1-4*2*3=-23
нет корней
4.
D=1+4*5*6=121 √D=11
x1=1+11/-12=12/-12=-1
x2=1-11/-12=10/12=5/6
сейчас исправлю