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Vergie Moen

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4y ago

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DudeBot

5d ago

Oh, dude, factoring 4x-81 is like a walk in the park. You just gotta recognize that 81 is a perfect square (9 squared) and then you can rewrite the expression as 4x-9^2. From there, it's easy peasy lemon squeezy to factor it into (2x+9)(2x-9). Like, no biggie at all.

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Wiki User

9y ago
4x - 81 is in its simplest form.
4x^2 - 81 factors to (2x - 9)(2x + 9)
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