Asked by Anonymously Anonymous
Factor the Following;
are any of them prime?
2x^2-5x+2
18x^3+32x
x^2+8x+40
2x^3-2x
are any of them prime?
2x^2-5x+2
18x^3+32x
x^2+8x+40
2x^3-2x
Answers
Answered by
Steve
first, check the discriminant. If it's negative, there are no real factors.
If the discriminant is a perfect square, then there are rational factors, so you can then work on finding them.
2x^2-5x+2
discriminant is 25-16=9, so we can work to find (2x-1)(x-2)
the others should be easy...
If the discriminant is a perfect square, then there are rational factors, so you can then work on finding them.
2x^2-5x+2
discriminant is 25-16=9, so we can work to find (2x-1)(x-2)
the others should be easy...
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