SOLUTION: Please help me with this. Find the real root of this equation and write the answer as an ordered pair. y = x^3 - X^2 - 4x +7 Thanks a million!

Algebra ->  Equations -> SOLUTION: Please help me with this. Find the real root of this equation and write the answer as an ordered pair. y = x^3 - X^2 - 4x +7 Thanks a million!      Log On


   

Question 1090923: Please help me with this.
Find the real root of this equation and write the answer as an ordered pair.
y = x^3 - X^2 - 4x +7

Thanks a million!
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!

y+=+x%5E3+-+x%5E2+-+4x+%2B7+ where a=1,b=-1,c=-4, and d=7
use this formula:

or

where
p+=+-b%2F%283a%29,
q+=+p%5E3+%2B+%28bc-3ad%29%2F%286a%5E2%29,
r+=+c%2F%283a%29
and you will get:
x=-2.22
x=1.61+%2B+i%2A+0.75
x=1.61+-+i%2A+0.75