Can you please tell me how I would simplify these? I obviously know the answers, just not sure how to get them..
Factor #s 1 - 4 completely
1) 25x^2 + 10x +1 = (5x + 1)^2
2) x^3 – 3x^2 + 4x – 12 = (x – 3) (x^2 + 4)
3) x^2 + 8x + 15 = (x + 3)(x + 5)
4) x^2 + 4x + 4 = (x + 2)^2
Find the product
5) (x -1) (x + 2) = x^2 + x – 2
6) (2x + 5) (2x – 5) = 4x^2 - 25