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Answer Key 9.4

  1. 1251612516
    12451245
    485485
  2. 5101551015
    51505150
    52562565256256
  3. 1512m21512m2
    3534m23534m2
    32m532m5
    6m56m5
  4. 55r310r255r310r2
    5252r4r5252r4r
    25r22r25r22r
  5. 38x738x7
    38x6x38x6x
    2x23x2x23x
  6. 3340a73340a7
    3358a6a3358a6a
    32a235a6a235a32a235a6a235a
  7. 12+2612+26
    43+2643+26
    23+2623+26
  8. 50+2050+20
    252+45252+45
    52+2552+25
  9. 1545101515451015
    1595101515951015
    1535101515351015
    45510154551015
  10. 1545+10151545+1015
    1595+10151595+1015
    1535+10151535+1015
    455+1015455+1015
  11. 25n10+52025n10+520
    25n10+54525n10+545
    25n10+10525n10+105
  12. 75345v75345v
    253395v253395v
    5395v5395v
  13. 6+2262+2(2)(2)6+2262+2(2)(2)
    6+2262+2(2)6+2262+2(2)
    6+4+22626+4+2262
    242242
  14. 104353+2(3)(3)104353+2(3)(3)
    104353+2(3)104353+2(3)
    10+64353
    1693
  15. (25)(5)5105+5
    2(5)5105+5
    10+55105
    15115
  16. 10(3)+412+515+220
    30+443+515+254
    30+515+83+45
  17. 3(2a)+66a2+10a2+215a2
    6a+6a6+a10+2a15
  18. (22p+55)(25p)
    410p2+1025p
    4p10+50p
  19. 15+123+203+16(3)
    63+323
  20. 54m+2m+2525
    10m+2m+2525
  21. 125100÷4
    a
    3525355325
  22. 1522154
  23. 54125÷5
    a
    1425145120
  24. 123÷3
    a
    41212
  25. 106÷2
    a
    53
  26. Does not reduce
  27. 5x243x2xy2y5x24xy3xy5x4y3xy
  28. 45y23x
  29. 2p23p÷p
    a
    2p3
  30. 8n210n÷2n
    a
    4n52n5

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