Anguyennn
  • Anguyennn
How find find y and x intercepts for the function, x^5+x^2-4X^3-4?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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Anguyennn
  • Anguyennn
\[X ^{5}+X ^{2}-4X ^{3}-4\]
kva1992
  • kva1992
if im not mistaken your y int is -4 and for the x intercept id recommend graphing it. you should have 5 x intercepts and the reason your y int is -4 is because you set all the xs to zero
Anguyennn
  • Anguyennn
yes the y intercept is -4

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Anguyennn
  • Anguyennn
but how do you get the x intercept algebraically
kva1992
  • kva1992
you would have to factor the equation and find all the solutions
Anguyennn
  • Anguyennn
how do you do that? please help!
kva1992
  • kva1992
http://www.purplemath.com/modules/solvpoly.htm
kva1992
  • kva1992
look at that pretty sure you would have to use synthetic division
Anguyennn
  • Anguyennn
is there another way to do it or no?
kva1992
  • kva1992
www.mathportal.org/calculators/solving-equations/polynomial-equation-solver.php?val1=x^5-4x^3plusx^2-4&val2=0&val3=%7Bx%7D^%7B5%7D-4%7Bx%7D^%7B3%7Dplus%7Bx%7D^%7B2%7D-4%3D
Anguyennn
  • Anguyennn
oh alright thank u!!
kva1992
  • kva1992
no problem
alekos
  • alekos
one of the x-intercepts is -1 so start of by dividing the polynomial by x+1
triciaal
  • triciaal
|dw:1443679224748:dw|
triciaal
  • triciaal
x-intercepts (when y = 0 ) -2,2,-1
alekos
  • alekos
nice work!

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