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When you are dividing by a linear factor, you don't "have" to use long polynomial division; instead, you can use synthetic-division, which is much quicker.

Write the coefficients ONLY inside an upside-down division symbol: | |

Make sure you leave room inside, underneath the row of coefficients, to write another row of numbers later. Put the test zero, x -1=0 ⇒x = 1, at the left: | |

Take the first number inside, representing the leading coefficient, and carry it down, unchanged, to below the division symbol: | |

Multiply this carry-down value by the test zero, and carry the result up into the next column: | |

Add down the column: | |

Multiply the previous carry-down value by the test zero, and carry the new result up into the last column: | |

Add down the column: This last carry-down value is the remainder. |

3) x

After getting one factor find the other factors by

As at the bottom of the line, there are 3 numbers so degree of the polynomial will be (3 -1 =2) and the numbers are 1,8,15.So the polynomial will be

x

Now find the factors of 15 in such a way that the addition and subtraction of that factors will be 8x.

So the

x

• Degree of the Polynomial

• Zeros of Polynomial

• Remainder Theorem

• Find remainder by Synthetic Division

• Rational root test in Polynomial

• Solved Examples on Polynomial

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