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Algebra 1MediumWhere the Formulas Come From

Where the Formulas Come From · Medium problem

A student expands (8x+6)2(8x + 6)^2 like this:

Step 1. (8x+6)2=(8x)2+(6)2(8x + 6)^2 = (8x)^2 + (6)^2

Step 2. =64x2+36= 64 x^{2} + 36

Which step is wrong, and what is the correct expansion?

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