Respuesta :

TheBreeze

21. 5(16v^2 -25)

5(4v + 5)(4v-5)

22. (3y + 5)(3y-5)

23. (3m - 1)^2

24. 4(9n^2 - 12n + 4)

4(3n - 2)^2

25. Doesn't look like there's much to factor... 3(3k^2 - 10k)

26. (n - 9)(n - 8)

27. (3a - 8)(a + 7)

28. 5(7r+5)(r+3)

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