решить уравнения.
(х – 5)(х + 7) = 0
(х + 1)(х + 4) = 0
(х – 2)(х – 6) = 0
(х + 3)(х – 8) = 0
Раскрыть скобки
(18 + х) + 12 =
25 – (а – b + 28) =
(25 – z ) + (t – 18) =
– (p + 3) + (q – 7) =
(22 + х) + 7 =
21 – (а – b + 34) =
(35 – z ) + (t – 28) =
– (p + 5) + (q – 9) =
