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Home > A2C > Chapter 12 > Lesson 12.2.1 > Problem 12-93

12-93.

Prove the relationship is true for n = 1.
9 = (1)(2(1) + 7)
9 = 9

Assume that the relationship is true for some number k.

Prove that, if the relationship is true for k, then it is true for k + 1.