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How do you factor 4x^2+9?

How do you factor 4x^2+9?
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4 votes
How do you factor 4x^2+9?

User Jon Magnus
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1 Answer

4 votes

4x^2+9=4x^2-(-9)=(2x)^2-(3i)^2=(2x-3i)(2x+3i)
User Jannick
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