Question

Выполните действия: а) (y²-2a)(2a+y²) b) (3x²+x)² в) (2+m)²(2-m)²

Answer 1

(y²-2a)(2a+y²) = y⁴-4a²
(3x²+x)² = 9x⁴ + 6x³ +x²
(2+m)²(2-m)² = (2+m)(2-m)(2+m)(2-m) = (4-m²)(4-m²) = (4-m²)² = 16 - 8m² + m⁴