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soffa
@soffa
July 2022
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помогите пожалуйста. осень надо.
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ejie1997
А1) по Виета г)
А2 -7√2=-√7²*2=-√98 Б)
A3 25(a+b)/(a²-b²) = 25a+25b/(a²-b²) A)
А4 =3√36-5=3*6-5=13
А5
2x²-5x-3=0
D=25-4*2*(-3)=7²
x1=(5+7)/4=3
x2=-2/4=-1/2
2(x-3)(x+1/2) В)
6. x(x+2)=3
x²+2x-3=0
D=4-1*(-3)=4²
x1=(-2+4)/2=1
x2=-6/2=-3
Ответ -3
В)
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Answers & Comments
А2 -7√2=-√7²*2=-√98 Б)
A3 25(a+b)/(a²-b²) = 25a+25b/(a²-b²) A)
А4 =3√36-5=3*6-5=13
А5
2x²-5x-3=0
D=25-4*2*(-3)=7²
x1=(5+7)/4=3
x2=-2/4=-1/2
2(x-3)(x+1/2) В)
6. x(x+2)=3
x²+2x-3=0
D=4-1*(-3)=4²
x1=(-2+4)/2=1
x2=-6/2=-3
Ответ -3
В)