Regroup terms
6t^12(t - 2)
Distribute
6t^12t + 6t^12 × -2
Use the Product Rule: x^ax^b = x^a + b
6t^12 + 6t^12 × -2
Simplify 12 + 1 to 13
Simplify 6t^12 × -2 to -12t^12
6t^13 - 12t^12
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