Задача 58014 (Х+2)^2=х(3х+2)...

6030eb5f3cfdeb46290caf02

20.02.2021 13:59:01

(Х+2)^2=х(3х+2)

5f3ea7e3faf909182968ddd9

20.02.2021 14:03:09

★

x^2+4x+4=3x^2+2x

2x^2-2x-4=0

x^2-x-2=0

D=1+8=9

x_(1)=(1-3)/2=-1; x_(1)=(1+3)/2=2.