bLong Division & Synthetic Division, Factor and Remainder Theorems completed.notebook March 13, 2015
Dividing Polynomials using Long Division/Synthetic Division
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bLong Division & Synthetic Division, Factor and Remainder Theorems completed.notebook March 13, 2015
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bLong Division & Synthetic Division, Factor and Remainder Theorems completed.notebook March 13, 2015
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bLong Division & Synthetic Division, Factor and Remainder Theorems completed.notebook March 13, 2015
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bLong Division & Synthetic Division, Factor and Remainder Theorems completed.notebook March 13, 2015
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bLong Division & Synthetic Division, Factor and Remainder Theorems completed.notebook March 13, 2015
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bLong Division & Synthetic Division, Factor and Remainder Theorems completed.notebook March 13, 2015
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bLong Division & Synthetic Division, Factor and Remainder Theorems completed.notebook March 13, 2015
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bLong Division & Synthetic Division, Factor and Remainder Theorems completed.notebook March 13, 2015
Long Division: 1. Write in division form with ALL place values. 2. Divide as you do with integers (Distribute the negative when you subtract "Draw the line, Change the signs") Ex (x3 + 4x2 3x 5) (x + 3)
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bLong Division & Synthetic Division, Factor and Remainder Theorems completed.notebook March 13, 2015
Ex 6x4 2x3 + 5x 1 (2x + 1)
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bLong Division & Synthetic Division, Factor and Remainder Theorems completed.notebook March 13, 2015
Ex. 3
(2x3 + 3x2 2x 5)(x2 1)1
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bLong Division & Synthetic Division, Factor and Remainder Theorems completed.notebook March 13, 2015
Synthetic Division: a process used to divide a polynomial by a binomial in the form x r (only works for linear factors) 1. Write in synthetic division form with ALL place values and NO variables. Set the divisor equal to zero to get the number out front. 2. Bring down the first coefficient 3. Multiply and add. Repeat until you run out of numbers 4. The result is the coefficients in order starting with one less degree Ex (x3+x+30) ÷ (x+3)
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bLong Division & Synthetic Division, Factor and Remainder Theorems completed.notebook March 13, 2015
Ex (x3 + 4x2 3x 5) ÷ (x + 3)
Ex (y6 + 4y4 + 3y2 + 2y) ÷ (y + 2)
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bLong Division & Synthetic Division, Factor and Remainder Theorems completed.notebook March 13, 2015
Ex Given: (x4 7x2 + 9x 10) ÷ (x 2) Which is better?
Long Division Synthetic Division
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bLong Division & Synthetic Division, Factor and Remainder Theorems completed.notebook March 13, 2015
Factor Theorem If a remainder = 0, then xr is a factor of the polynomial. Ex Is x2 a factor of x3 + 6x2 12x 8?
Remainder Theorem If the remainder that number, and xr is not a factor.
0, then the remainder is
Ex Is x1 a factor of x2 2?
Can check remainder by "plugging in" the number into polynomial. To test x1, evaluate f(1). If f(r) = 0, then it is a factor.
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bLong Division & Synthetic Division, Factor and Remainder Theorems completed.notebook March 13, 2015 More Examples: (For #1 and #3 Find all roots) 1. (x3 x2 + 2) (x + 1)
TRY
!
2. (x4 3x3 + 4x2 5x + 1) (x 1)
3. (2x3 + 5x2 14x 8) (x 2)
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bLong Division & Synthetic Division, Factor and Remainder Theorems completed.notebook March 13, 2015
Use synthetic division to find the value of k so that each remainder is zero. 1. (2x3 x2 + x + k) ÷ (x 1)
2. (x3 + 18x2 + kx + 4) ÷ (x + 2)
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bLong Division & Synthetic Division, Factor and Remainder Theorems completed.notebook March 13, 2015
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