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21-05-2020
Mathematics

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Factor completely.

4x^2 + 36xy + 81y^2

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21-05-2020

Answer:

(2x + 9y)^2

Step-by-step explanation:

First: rewrite

2x^2 + 2 * 2x * 9 + (9y)^2

Then: (2x + 9y)^2

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