What is a quartic function with only the two real zeros given?

x = -4 and x = -1
A. y = x^4 + 5x^3 + 5x^2 + 5x+4

B. y = x^4 - 5x^3 - 5x2^ - 5x - 4

C.y = -x^4 + 5x^3 + 5x^2 + 5x+4

D. y = x^4 + 5x^3 + 5x^2 + 5x-5

Question

What is a quartic function with only the two real zeros given?

x = -4 and x = -1
  A. y = x^4 + 5x^3 + 5x^2 + 5x+4 	

  B. y = x^4 - 5x^3 - 5x2^ - 5x - 4 	

  C.y = -x^4 + 5x^3 + 5x^2 + 5x+4 	

  D. y = x^4 + 5x^3 + 5x^2 + 5x-5

agent0smith · Answer

$$\large y = (x+4)^2(x+1)^2$$The hard part is left up to you ;)

jhonyy9 · Answer

try getting one what you can factorizing in this way 

(x+4)^2 *(x+1)^2 =0

idani · Answer

@kgrendel0324

idani · Answer

Is not a or b right lol ?

myininaya · Answer

hint: you can eliminate some (or most) of the options by pluggin in x=-1 and x=-4
mark out the one's that don't give a result of zero when pluggin in those numbers

idani · Answer

I probably got it wrong lol but thank you