Ответ:
D=9-4*1*(-10)=49
x1.2=3+- 7/2
x1=5
x2=-2
5^2+5^2÷25+25=50
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Ответ:
D=9-4*1*(-10)=49
x1.2=3+- 7/2
x1=5
x2=-2
5^2+5^2÷25+25=50