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Mathematics
OpenStudy (lukecrayonz):

What polynomial has roots of –5, –4, and 1 ? I must be doing these wrong, because everytime I am getting a different sign. It's (x-5)(x-4)(x+1), right?! What polynomial has roots of –5, –4, and 1 ? I must be doing these wrong, because everytime I am getting a different sign. It's (x-5)(x-4)(x+1), right?! @Mathematics

7 years ago
OpenStudy (lukecrayonz):

Possible answers x3 – 8x2 – 11x + 20 x3 – x2 + 22x + 40 x3 + x2 – 22x – 40 x3 + 8x2 + 11x – 20

7 years ago
OpenStudy (mathteacher1729):

(x-5)(x-4)(x+1) has roots at x = POSITIVE five, POSITIVE four, and NEGATIVE one. A root is where the stuff in the parenthesis equals zero. (x-5) has root at positive five cuz... ( (+5) - 5) = 0

7 years ago
OpenStudy (mathteacher1729):

Check out the graph. By the way, the program I used here is free and works on all operating systems. Geogebra: http://www.geogebra.org/cms/en/installers

7 years ago
OpenStudy (lukecrayonz):

I use geogebra already <3

7 years ago
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