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Please multiply (4x + 7)^2
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1 vote
Please multiply (4x + 7)^2

User Ziaul
by
8.5k points

1 Answer

3 votes

Answer:

16x² + 56x + 49

Explanation:

First, expand:

(4x + 7)² = (4x + 7)(4x + 7)

Follow the FOIL method. FOIL = First, Outside, Inside, Last.

(4x)(4x) = 16x²

(4x)(7) = 28x

(7)(4x) = 28x

(7)(7) = 49

16x² + 28x + 28x + 49

Combine like terms:

16x² + (28x + 28x) + 49

16x² + (56x) + 49

16x² + 56x + 49 is your answer.

~

User Frzsombor
by
9.0k points
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