Предмет: Математика, автор: ilina2742

х+2х(х+2)=22 решить задачу

Ответы

Автор ответа: Roif

0

x+2x²+4x=22
2x²+5x-22=0
D=25-4*2*(-22)=25+176=√201
x1,2=-5+-√201/4

Ответ:x1= -5+√201/4
x2= -5-√201/4

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