4. 2/(х-5)= 3/(3-2х)
2 (3-2х)= 3 (х-5)
6 - 4х= 3х - 15
-4х - 3х= -15 - 6
-7х= -21 | ÷(-7)
х= 3
ответ: х= 3.
8. 1/(х+1) × √(х^2 + 6х + 9)= 1/(х+1) × √(х+3)^2= 1/(х+1) × (х+3)= (х + 3)/(х + 1)= (-3 + 3)/(-3 + 1)= 0
4. 2/(х-5)= 3/(3-2х)
2 (3-2х)= 3 (х-5)
6 - 4х= 3х - 15
-4х - 3х= -15 - 6
-7х= -21 | ÷(-7)
х= 3
ответ: х= 3.
8. 1/(х+1) × √(х^2 + 6х + 9)= 1/(х+1) × √(х+3)^2= 1/(х+1) × (х+3)= (х + 3)/(х + 1)= (-3 + 3)/(-3 + 1)= 0