(m² + 2)² = m⁴ + 4m² + 4
(n² - 3)² = n⁴ - 6n² + 9
(2x + y²)² = 4x² + 4xy² + y⁴
(3p - k²)² = 9p² - 6pk² + k⁴
(4p² + k²)² = 16p⁴ + 8p²k² + k⁴
(8x² - 0,2)² = 64x⁴ - 3,2x² + 0,04
