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Home > PC > Chapter 9 > Lesson 9.3.1 > Problem 9-99

9-99.

Solve (3a − 2)4 + (6a + 1)3 = 81a4 + 17. Homework Help ✎

Use the Binomial Theorem to expand these.

(3a − 2)4 + (6a + 1)3 = 81a4 + 17
81a4 − 216a3 + 216a2 − 96a + 16 + 216a3 + 108a2 + 18a + 1 = 81a4 + 17
81a4 + 324a2 − 78a + 17 = 81a4 + 17