Division of a polynomial by a binomial by using long division
For dividing a polynomial by a binomial, we may follow the following steps:
Step I: Arrange the terms of the dividend and divisor in descending order of their degrees.
Step II: Divide the first term of the dividend by the first term of the divisor to obtain the first term of the quotient.
Step III: Multiply the divisor by the first term of the quotient and subtract the result from the dividend to obtain the remainder.
Step IV: Consider the remainder (if any) as dividend and repeat step II to obtain the second term of quotient.
Step V: Repeat the above process till we obtain a remainder which is either zero or a polynomial of degree less than that of the divisor.
Example 1 Divide
Solution: We go through the following steps to perform the division:
Step I: We write the terms of the dividend as well as of divisor in descending order of their degrees. Thus, we write
Step II: We divide the first term of the dividend by the first term of the divisor and obtain as the first term of the quotient.
Step III: We multiply the divisor by the first term we get of the quotient and subtract the result from the dividend We obtain as the remainder.
Step IV : We take as the new dividend and repeat step II to obtain the second term of the quotient.
Step V : We multiply the divisor by the second term of the quotient and subtract the result from the new dividend. We obtain as the remainder.
Step VI : Now we treat as the new dividend and divide its first term by the first term of the divisor to obtain as the third term of the quotient.
Step VII : We multiply the divisor and the third term of the quotiemt and subtract the result from the new dividend. We obtain as the remainder. Thus, we can say that: or,
Example: Divide
Solution:
Find the remainder: | |||
Right Option : C | |||
View Explanation |
The process of division of a polynomial by another polynomial does not stop until ____________________ | |||
Right Option : C | |||
View Explanation |
If is divided by , then the possible degrees of quotient and remainder are ___________________ | |||
Right Option : A | |||
View Explanation |
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