NEED HELP FAST PLZ Three roots of the polynomial equation x^4-4x^3-2x^2+12x+9=0 are 3,-1 and -1 explain why the fourth root must be a real number. And find the fourth root

answer: ouch. thats difficult

step-by-step explanation:

1. 3. can also be expressed as (22/7)

2. -4.5

3. 3.6

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b. y = 4x - 2

step-by-step explanation:

to find a parallel equation to an equation, make sure both equations have the same slope but different y-intercepts.

y = 4x + 1

4 = slope

1 = y-intercept

y = 4x - 2

4 = slope

-2 = y-intercept

they both have the same slope but different y-intercepts, so, b. is the correct answer.

and to check your work, you can graph both equations. : )

the answer is d

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