Algebra 2

Can this expression be factored?
4x^2+9
My homework assignment says to factor completely and this is one of the problems but I don't think this expression can be factored. Am I wrong? If so how do I factor it.

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asked by Judy
  1. I can not factor that

    are you sure it is not

    4 x^2 - 9

    that would be the difference of squares which is
    (2 x - 3)(2 x + 3)

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    posted by Damon

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