Special Product Crossword Puzzle

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Across
  1. 2. (5-x)(8-x)
  2. 4. (6x+2y)^2
  3. 5. (6-x)(6-x)
  4. 7. (3x+3)(3x+6)
  5. 8. (b+4a)^2
Down
  1. 1. -3b(a+6-8a)
  2. 3. (b+5-3b)^2
  3. 4. (6x+9)
  4. 6. (35b^2-4)(35b^2-4x)
  5. 9. (2x^2y^4+3)(4x^4y^8−6x^2y^4+9)