anonymous
  • anonymous
solve the cubic polynomial,f(x)=6x^3+5x^2-12x+4 and find the relationship between the zeros and coefficients of the polynomail
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
help me.....................please .i Will give medal
Loser66
  • Loser66
still need help?
anonymous
  • anonymous
yes

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Loser66
  • Loser66
the last number 4 has factors \(\pm1\), \(\pm 2\), \(\pm 4\) the first number 6 has factors \(\pm 1\), \(\pm2\), \(\pm 3\), \(\pm 6\) hence the factors of 6 will go with the factor of 4 to form the zeros of the polynomial but it is the denominator. I meant |dw:1432874701462:dw|
Loser66
  • Loser66
put \(\pm\) on each of them.
Loser66
  • Loser66
Fortunately, the cubic has at most 3 zeros, hence if we find out 1 of them, the rest is easy.
Loser66
  • Loser66
The logic above is the answer for "Relationship between the zeros and coefficients of the polynomial" Now is to find the zero.
Loser66
  • Loser66
test -2, you get y =0, hence (x+2) is a factor of the polynomial. take long division to find other zeros. Are you allowed to use calculator?
anonymous
  • anonymous
no
Loser66
  • Loser66
ok, good luck, you have to check one by one among the options I gave you above.
Loser66
  • Loser66
|dw:1432875418149:dw|
anonymous
  • anonymous
thank u : ) i understand this answer

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