45. 1) 4m - (m - 4) + (5 - 2m) = m + 9,
4m - m + 4 + 5 - 2m = m + 9,
m + 9 = m + 9.
2) 3n - 7(n - 2) + 3(4 - 2n) = 26 - 10n,
3n - 7n + 14 + 12 - 6n = 26 - 10n,
26 - 10n = 26 - 10n.
3) 8 - 12(p - 5/6) + 9p - 18 = -3p,
8 - 12p + 10 + 9p - 18 = -3p,
-3p = -3p.
46. 1) (4 + p)² = 16 + p²,
16 + 8p + p² ≠ 16 + p².
2) (a + 4)(a + 5) = a² + 20,
a² + 5a + 4a + 9 = a² + 20,
a² + 9a + 9 ≠ a² + 20.
