3) Представьте в стандартном виде многочлен: a) –2hd + dh – h + d + hd; b) t² + 8t ⋅ t + 5a³ – 3a³ ⋅ a.

a) –2hd + dh – h + d + hd = -2hd + 1hd + 1hd - h + d = (-2+1+1)hd - h + d = 0hd - h + d = -h + d = d - h Ответ: $$d-h$$ b) t² + 8t ⋅ t + 5a³ – 3a³ ⋅ a = t² + 8t² + 5a³ – 3a⁴ = (1+8)t² + 5a³ – 3a⁴ = 9t² + 5a³ – 3a⁴ = 9t² – 3a⁴ + 5a³ Ответ: $$9t²-3a^4+5a³$$