Respuesta :

#10

  • x²-9
  • x²-3²
  • (x+3)(x-3)

Option A and B

#11

  • √9a²+16a²
  • √a²(9+16)
  • √a²(25)
  • √5²a²
  • 5a

Option C

Answer:

   10. (2) x - 3

    11. (3) 5a

Step-by-step explanation:

Question 10

  • x² - 9 = (x + 3)(x - 3)
  • x² - 5x + 6 = (x - 3)(x + 2)
  • x - 3 is a common factor
  • (2) x - 3

Question 11

Simplifying

  • √9a² + 16a²
  • √a² (9 + 16)
  • a√25
  • (3) 5a