1
x^2+24x+144=48x
x^2-24x+144=0
(x-12)^2=0
x=12
2
x^2-26x+169=-52x
x^2+26x+169=0
(x+13)^2=0
x=-13
3
x^2-14x+49=-28x
x^2+14x+49=0
(x+7)^2=0
x=-7
4
x^2-20x+100=-40x
x^2+20x+100=0
(x+10)^2=0
x=-10
5
x^2-28x+196=-56x
x^2+28x+196=0
(x+14)^2=0
x=-14
6
|x-10|=|x+4|
x-10=x+4
корней нет
x-10=-x-4
2x=6
x=3
7
|5x-8|=|5x-2|
5x-8=5x-2
корней нет
5x-8=-5x+2
10x=10
x=1