Q. Divide the polynomials.The form of your answer should either be p(x) or p(x)+x−5k where p(x) is a polynomial and k is an integer.x−55x3−22x2−17x+11=
Set up long division: Set up the long division.We will use polynomial long division to divide (5x3−22x2−17x+11) by (x−5).
Divide first term: Divide the first term of the numerator by the first term of the denominator.Divide 5x3 by x to get 5x2.Write 5x2 above the division bar.
Multiply divisor by result: Multiply the entire divisor (x−5) by the result from Step 2(5x2).5x2×(x−5)=5x3−25x2.Write this result under the first two terms of the dividend.
Subtract result from first terms: Subtract the result from Step 3 from the first two terms of the dividend.(5x3−22x2)−(5x3−25x2)=3x2.Bring down the next term of the dividend, which is −17x, to get 3x2−17x.
Bring down next term: Divide the first term of the new polynomial 3x2−17x by the first term of the divisor x.Divide 3x2 by x to get 3x.Write 3x above the division bar, next to 5x2.
Divide first term of new polynomial: Multiply the entire divisor x−5 by the result from Step 53x.3x⋅(x−5)=3x2−15x.Write this result under the corresponding terms of the polynomial.
Multiply divisor by result: Subtract the result from Step 6 from the corresponding terms of the polynomial.(3x2−17x)−(3x2−15x)=−2x.Bring down the next term of the dividend, which is +11, to get −2x+11.
Subtract result from polynomial: Divide the first term of the new polynomial (−2x+11) by the first term of the divisor (x).Divide −2x by x to get −2.Write −2 above the division bar, next to 5x2+3x.
Bring down next term: Multiply the entire divisor (x−5) by the result from Step 8(−2).−2×(x−5)=−2x+10.Write this result under the corresponding terms of the polynomial.
Divide first term of new polynomial: Subtract the result from Step 9 from the corresponding terms of the polynomial.(−2x+11)−(−2x+10)=1.This is the remainder of the division.
Multiply divisor by result: Write the final answer in the form requested.The quotient is 5x2+3x−2 with a remainder of 1.The final answer is p(x)+x−5k, where p(x)=5x2+3x−2 and k=1.
More problems from Powers with decimal and fractional bases