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attashe74 [19]
3 years ago
12

To factor 9x^2 - 4, you can first rewrite the expression as:

Mathematics
1 answer:
olga2289 [7]3 years ago
4 0

Answer:

  C. (3x)^2 - (2)^2

Step-by-step explanation:

Each of the two terms is a perfect square, so the factorization is that of the difference of squares. Rewriting the expression to ...

  (3x)^2 - (2)^2

highlights the squares being differenced.

__

We know the factoring of the difference of squares is ...

  a^2 -b^2 = (a -b)(a +b)

so the above-suggested rewrite is useful for identifying 'a' and 'b'.

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