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How Do You Do Long Division With Polynomials?
Divide 2x2-11x-20 by 2x-3
Summary
- Our two polynomials cannot be simplified so we go ahead with long division
- We got the first term of our quotient, x, by dividing the first term of our dividend by the first term in our divisor
- We got the second term of our quotient, -7, by dividing the first term of our partial dividend by the first term in our divisor

Notes
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- 2x2-11x-20 divided by 2x-3 is a rational expression
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- 2x2-11x-20 is the dividend
- 2x+3 is the divisor
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- 2x2-11x-20 is the dividend
- 2x+3 is the divisor
- The quotient is our answer
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- 2x2 is the first term of 2x2-11x-20
- 2x is the first term of 2x+3
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- We got this by dividing the first term of our dividend by the first term in our divisor
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- The product is the result of multiplication
- So we're going to multiply x by 2x+3 and then subtract that product from 2x2-11x-20
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- When we multiply x and 2x+3 together we have to distribute
- x times 2x is 2x2
- x times 3 is equal to 3x
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- The first term of the partial dividend is -14x
- The first term in our divisor is 2x
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- When we multiply -7 and 2x+3 together we have to distribute
- -7 times 2x is equal to -14x
- -7 times 3 is equal to -21
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- Since we are subtracting -14x-21 we have to switch its signs
- So -14x becomes 14x, and -21 becomes 21
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- -20+21 = 1
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