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kirk.freedman
 3 years ago
Find all the zeroes of each equation. x^3 – x^2 + 5x – 5 = 0
kirk.freedman
 3 years ago
Find all the zeroes of each equation. x^3 – x^2 + 5x – 5 = 0

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kirk.freedman
 3 years ago
Best ResponseYou've already chosen the best response.1Someone please help, how do I do this?

RadEn
 3 years ago
Best ResponseYou've already chosen the best response.1the sum of all coefficients be 0 (11+55=0) it means x=1 is the root or (x1) is one of the factor that polynomial find the other factor by using synthetic division, then for zeroes take all factors be 0 and solve for x

kirk.freedman
 3 years ago
Best ResponseYou've already chosen the best response.1So I got x^2+5 When I used synthetic division. What now?

sirm3d
 3 years ago
Best ResponseYou've already chosen the best response.0equate it to zero and use the quadratic formula.

kirk.freedman
 3 years ago
Best ResponseYou've already chosen the best response.1Oh wait so if I have x^2+5=0 then x=i sqrt 5? That's one of my answers?

kirk.freedman
 3 years ago
Best ResponseYou've already chosen the best response.1These Are the possible answers btw dw:1354664328662:dw

RadEn
 3 years ago
Best ResponseYou've already chosen the best response.1just to check the value of D(discrimininant) with D=b^24ac D=0^24*1*5=20 it means no solution for x real, but if u want representing x to in complex number use the quadratic formula : x=[b + sqrt(b^24ac)]/(2a)

kirk.freedman
 3 years ago
Best ResponseYou've already chosen the best response.1What is a,b, and c for the quadratic formula?

kirk.freedman
 3 years ago
Best ResponseYou've already chosen the best response.1is it 1,1, and 5?

RadEn
 3 years ago
Best ResponseYou've already chosen the best response.1actually the general form a quadratic equation is ax^2 + bx + c = 0 so given x^2 + 5 = 0 it means a=1, b=0, c=5

kirk.freedman
 3 years ago
Best ResponseYou've already chosen the best response.1But the original formula is x^3 – x^2 + 5x – 5 = 0 wouldn't b be 5 since it's 5x?? I'm confused there.

kirk.freedman
 3 years ago
Best ResponseYou've already chosen the best response.1Where do you get the x^2+5=0 formula?

kirk.freedman
 3 years ago
Best ResponseYou've already chosen the best response.1Oh nvm, I got it. Thanks for the help!

sirm3d
 3 years ago
Best ResponseYou've already chosen the best response.0you have all the answers. your answer should be A.

kirk.freedman
 3 years ago
Best ResponseYou've already chosen the best response.1Yes, that's what I put and got it right:) Thanks
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