Задача 58173 (5x+2)^2-(5x-3)(5x+3)=73...

603c53cac87bcc1c7d5205b8

01.03.2021 05:39:20

(5x+2)^2-(5x-3)(5x+3)=73

5f3ea7e3faf909182968ddd9

01.03.2021 09:53:58

★

25x^2+10x+4-(25x^2-9)=0

25x^2+10x+4-25x^2+9=0

10x+13=0

10x=-13

x=-13:10

x=-1,3