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7 September, 10:14

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

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  1. 7 September, 10:16
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    Answer: (3x-2) (3x+2)

    Step-by-step explanation: this is because 9x^2 and 4 is a perfect square. So the square root of 9x^2 is 3x and because the 4 is negative you have to times 3x by a negative and positive 2.
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