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First, it is important to regroup, so I am going to rearrange this equation:
(x4 - 7x2 - 18 - 3x3 + 27x
I can now factor the first three terms and the last two terms:
(x4 - 7x2 - 18) becomes (x2 - 9)(x2 + 2)
-3x3 + 27x becomes -3x(x2 - 9); so the new equation looks like:
(x2 - 9)(x2 + 2) - 3x(x2 - 9)
From here, factor out what is common, in this case- x2- 9. Therefore, you will have
(x2 - 9)(x2 + 2 - 3x), which can be rearranged to (x2 -9)(x2 - 3x + 2).
Further factoring reveals
(x + 3)(x - 3)(x - 1)(x - 2) as the final answer.
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It can't be factored because its discriminant is less than zero
Factor the polynomial x2 plus 5x - 24 Write each factor as a polynomial in descending order?
2x+5x-24 7x2-24
