Решите уравнения
(x2-1)(x+3)=0
(x2-4)(x+1)=0

(x2-1)(x+3)=0x2  -1 = 0 => x  =1 or x = -1orx+3 = 0 => x = -3(x2-4)(x+1)=0x2 - 4 = 0 => x = 2 or x = -2orx  +1 = 0 = >x = -1