Psych Intelligence Test

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Across
  1. 2. LV2:375678/486
  2. 3. LV1:2/7-12/25
  3. 7. LV3:4174992668/539
  4. 8. LV3:Greatest Common Divisor of 385,253,693
  5. 9. LV1:-1541/-23
Down
  1. 1. LV2:(4+8i)(2/7+i/4)
  2. 4. LV2:291(181)
  3. 5. LV3:-7v^5-2v^4-3v^3+4v^2+7v-2,v=6
  4. 6. LV1:(-5/8)*(-19/27)