Factor the following polynomials anyway you know how (guess and check, slide-divide-slide, factoring by grouping, algebra tiles, etc.) You MUST show all your work on how you factored them. 1. x^2 + 4x + 4

2. x^2 - 10x + 25

3. x^2 - 8x + 16

4. 4x^2 + 20x + 25

5. 9x^2 - 42x + 49

6. 2x^2 + 8x + 8

In the figure below, ∠dec ≅ ∠dce, ∠b ≅ ∠f, and segment df is congruent to segment bd. point c is the point of intersection between segment ag and segment bd, while point e is the point of intersection between segment ag and segment df. the figure shows a polygon comprised of three triangles, abc, dec, and gfe. prove δabc ≅ δgfe.