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saumenmadina
@saumenmadina
July 2022
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Алина973
(x-2)^2-49=0;
x^2-2*x*2+2^2-49=0;
x^2-4x+4-49=0;
x^2-4x-45=0;
D=(-4)^2-4*1*(-45)=16+180=196;
x1=(4+14)/2=16/2=8;
x2=(4-14)/2=-10/2=-5.
Пожалуйста)
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Answers & Comments
x^2-2*x*2+2^2-49=0;
x^2-4x+4-49=0;
x^2-4x-45=0;
D=(-4)^2-4*1*(-45)=16+180=196;
x1=(4+14)/2=16/2=8;
x2=(4-14)/2=-10/2=-5.
Пожалуйста)