x^2+(x+3)*5=39
x^2+5x+15-39=0
x^2+5x-24=0
a=1, b=5, c=-24
D=b^2-4ac=25+96=121
Ответ: -8; 3
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x^2+(x+3)*5=39
x^2+5x+15-39=0
x^2+5x-24=0
a=1, b=5, c=-24
D=b^2-4ac=25+96=121
Ответ: -8; 3