Answer:
16 x 2 + 8x + 1
Explanation:
Using the foil method we expanded the polynomial.
16x² + 8x + 1
(4x + 1)(4x + 1)
each term in the second factor is multiplied by each term in the first factor, that is
4x(4x + 1) + 1(4x + 1) ← distribute both parenthesis
= 16x² + 4x + 4x + 1 ← collect like terms
= 16x² + 8x + 1
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