Solving Quadratics

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Across
  1. 3. x2+8x-20=0
  2. 4. 6x2-7x-20=0
  3. 6. x2=-144
  4. 7. x2=27-6x
  5. 10. 4x2+7x-8=-8x-4
  6. 11. x2-8x=-7
Down
  1. 1. 0=3x2-8x+5
  2. 2. 10x2+10=-630
  3. 5. 0=x2-25x+154
  4. 7. 16=x2
  5. 8. x2-4x-41=4
  6. 9. x2+12x=-36