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anashkinaolia
@anashkinaolia
August 2022
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решите уравнения
a) |x|^2=3x+10
б)5x+9= |x+3|^2
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AnonimusPro
Verified answer
A) |x|^2=x^2;
x^2=3x+10;
x^2-3x-10=0;
D=49; x1=5; x2=-2;
б) 5x+9=(x+3)^2;
5x+9=x^2+6x+9;
x^2+x=0;
x(x+1)=0;
x1=0; x2=-1
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Answers & Comments
Verified answer
A) |x|^2=x^2;x^2=3x+10;
x^2-3x-10=0;
D=49; x1=5; x2=-2;
б) 5x+9=(x+3)^2;
5x+9=x^2+6x+9;
x^2+x=0;
x(x+1)=0;
x1=0; x2=-1