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12-162.

Use the pattern for (a + b)3 to expand (2x − 3)3.Homework Help ✎

Recall question 12-156 from the classwork.
How did your team write (a + b)3 in the expanded form?

Substitute 2x for a and −3 for b and simplify.

8x3 − 36x2 + 54x − 27