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Question
Divide the first polynomial by the second in each of the following. Also, write the quotient and remainder:
x4 − x3 + 5x, x − 1
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Solution
\[\frac{x^4 {-x}^3 +5x}{x-1}\]
\[ = \frac{x^3 (x-1)+5(x-1)+5}{x-1}\]
\[ = \frac{{(x-1)(x}^3 +5)+5}{x-1}\]
\[ {=(x}^3 +5)+ \frac{5}{x - 1}\]
\[\text{Therefore, quotient} = x^3 +5\ \text{and remainder = 5 .}\]
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