Question

alguien me puede ayudar esta hoja

Answer 1

1. (x - 3)² + 6(x - 1) - x²

= x² - 6x + 9 + 6x - 6 - x²

= 3

2. (x + 2)² + (x + 3)² - 2(x² + 5x) + 3

= x² + 4 + x² + 6x + 9 - 2x² - 10x + 3

= 16 - 4x

3. ab = 4 ^ a + b = 3

(a + b)² = (3)² = 9 = a² + 2ab + b²

9 = a² + b² + 8

9 - 8 = a² + b²

a² + b² = 1

4. [(a + b)² + (a - b)²] [(a + b)² - (a - b)²]

= [a² + 2ab + b² + a² - 2ab + b²] [a² + 2ab + b² - a² + 2ab - b²]

= [2a²+ 2b²] [4ab]

= 8a³b + 8ab³