Question

Решите уравнения

|x2-6x-19|=|2x+14|

x2-7|x|+10=0

|x2+10x+20|=3x+10

|x+1|+|x+2|=2

Answer 1

|x2-6x-19|=|2x+14|

x2-8x-33=0

x(x-8)=33

x2-7|x|+10=0

x(x-7)=-10

 

|x2+10x+20|=3x+10

x2+7x+10=0

X(x-7)=-10

|x+1|+|x+2|=2

2x+1=0

x=-1/2