1) (5a(a^4 - 6a^2 + 3) = 5a^5 - 30a^3 + 15a)
2) ((x+4)(3x - 2) = 3x^2 - 2x + 12x - 8 = 3x^2 + 10x - 8)
3) ((6m + 5n)(7m - 3n) = 42m^2 - 18mn + 35mn - 15n^2 = 42m^2 + 17mn - 15n^2)
4) ((x + 5)(x^2 + x - 6) = x^3 + x^2 - 6x + 5x^2 + 5x - 30 = x^3 + 6x^2 - x - 30)
Ответ:
1) (5a^5 - 30a^3 + 15a)
2) (3x^2 + 10x - 8)
3) (42m^2 + 17mn - 15n^2)
4) (x^3 + 6x^2 - x - 30)