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just make the trinomial easier to factor.

ex -x2 + 3x + 4 ... most books don't teach you how to factor when a leading term is negative. ... so -1(x2- 3x- 4) ... now factor again ignoring the -1

-1(x - 4)(x + 1)

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11y ago
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12y ago

The same way as with positive numbers. The absolute values are the same.

1, -1, 2, -2, 4, -4, 8, -8 are the factors of -8.

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10y ago

Change all the signs in the trinomial and then proceed as normal.

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Q: When you factor out -1 from a trinomial?
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In which situation would you factor out -1 from a trinomial?

You would factor out -1 (a) from a trinomial in an equation such as -a^2 +30a - 2a + 60 after the middle term has been separated. The final answer of this trinomial would then be (a-30) (a-30).


What is the meaning of factor of perfect square trinomial?

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