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Solution:
Given expression is (3k + 4)(3k2 - 5k - 3)
Solving by the vertical method we have:
3k2 - 5k - 3
3k + 4
----------------------------
-9k - 12
-15k2 - 20k
9k3 + 12k2
----------------------------
9k3 - 3k2 - 29k - 12
Summary:
Simplify using the vertical method. (3k + 4)(3k2 - 5k - 3) we get 9k3 - 3k2 - 29k - 12