Question

Алгебра... ответьте пжпжпжжпжпжп. Номер 239

Answer 1

a)

$x - 1 = 0 \\ x - 7 = 0 \\ x = 1 \\ x = 7$

б)

$x + 2 = 0 \\ x - 9 = 0 \\ x = - 2 \\ x = 9$

в)

$x + 1 = 0 \\ x - 1 = 0 \\ x - 5 = 0 \\ x = - 1 \\ x = 1 \\ x = 5$

г)

$x = 0 \\ x + 3 = 0 \\ x = - 3$