Question

simplify each expression. justify each step. (5n • 9) • 2n

Answer 1

5n * 9 = 45n

45n * 2n = 90n^2

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Answer 2

10n^2·18n is your answer

1. 5n·2n= 10n^2
2. 9·2n= 18n
3. 10n^2·18n=10n^2·18n