Question

решите уравнения
1) (х+1)(х-1)(х-5)=0
2) х(х+3)(х+3)=0
3) (х-4)(х+9)(х+13)=0

Answer 1

1. х+1=0
х-1=0
х-5=0
х1=-1
х2=1
х3=5
2.
$x(x + 3) {}^{2} = 0 \ x = 0 \ (x + 3) {}^{2} = 0 \ x = 0 \ x = - 3$
3.х-4=0
х+9=0
х+13=0
х=4
х=-9
х=-13