Answer:
Factorizing each expression:
x^2 + 8x + 15 = (x+3)(x+5)
x^2 - 2x - 15 = (x-5)(x+3)
x^2 + 9x - 36 = (x+12)(x-3)
x^2 - 12x - 45 = (x-15)(x+3)
So the factorized expressions are:
- x^2 + 8x + 15 = (x+3)(x+5)
- x^2 - 2x - 15 = (x-5)(x+3)
- x^2 + 9x - 36 = (x+12)(x-3)
- x^2 - 12x - 45 = (x-15)(x+3)