(x²-4)/(x²(x+3)-4(x+3))=0
(x²-4)/(x²-4)(x+3)=0
ОДЗ: x≠2, x≠-2, x≠-3
1/(x+3)≠0
x∈∅
(x²-3x-10)/(x-5)=0
ОДЗ: x≠5
(x²-5x+2x-10)/(x-5)=0
(x-5)(x+2)/(x-5)=0
x+2=0
x= -2
1)(а^3-в^4)(а^6+а^3в^4+в^8)
2)(3-х)(9+3х+х^2)
3)(а+4)(а^2-8а+16)
4)(2х-у)(4х^2+2ху+у^2)
5)(в^3+а^4)(в^6-в^3а^4+а^8)
___________________________
А)НОД(32,72) = 8
б)НОД(68;104) = 4
в)НОК(24;54) = 216
г)НОК(14;21;105)=210