1) -3x² + 12x - 12 = -3(x² - 4x + 4) = -3(x - 2)(x - 2) = -3(x - 2)²
2) 16m² - (m - n)² = 16m² - (m² - 2mn + n²) = 16m² - m² + 2mn - n² = 15m² + 2mn - n²
1) -3x² + 12x - 12 = -3(x² - 4x + 4) = -3(x - 2)(x - 2) = -3(x - 2)²
2) 16m² - (m - n)² = 16m² - (m² - 2mn + n²) = 16m² - m² + 2mn - n² = 15m² + 2mn - n²