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3a^2 - 18a + 27
3 * (a^2 - 6a + 9)
3 * (a - 3) * (a - 3)
= 3 (a^2 - 6a + 9)
= 3 (a - 3) (a - 3)
= 3 (a - 3)^2
3(a - 3)^2
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3a^2 - 18a + 27
3 * (a^2 - 6a + 9)
3 * (a - 3) * (a - 3)
3a^2 - 18a + 27
= 3 (a^2 - 6a + 9)
= 3 (a - 3) (a - 3)
= 3 (a - 3)^2
3(a - 3)^2