Division of Monomials

Division of monomials means product of their quotient of numerical coefficients and quotient of their literal coefficients.

Since, the product of 3m and 5n = 3m × 5n = 15mn; it follows that

(i) \(\frac{15mn}{3m} = \frac{3   \times   5   \times   m   \times   n}{3   \times   m}\) = 5n

or, 15mn ÷ 3m = 5n

i.e. when 15mn is divided by 3m, the quotient is 5n.

(ii) \(\frac{15mn}{5n} = \frac{3   \times   5   \times   m   \times   n}{5   \times   n}\) = 3m

or, 15mn ÷ 5n = 3m

i.e. when 15mn is divided by 5n, the quotient is 3m.

1. Divide 35mxy by 5my

35mxy ÷ 5my

= \(\frac{35mxy}{5my}\)

Now, we need to write each term in the expanded form and then cancel the terms which are common to both numerator and denominator.

= \(\frac{\not{5}   \times   7   \times   \not{m}   \times   x  \times   \not{y}}{\not{5}   \times   \not{m}   \times   \not{y}}\)

= 7x

= \(\frac{14a^{7}}{2a^{5}}\)

Now, we need to write each term in the expanded form and then cancel the terms which are common to both numerator and denominator.

= \(\frac{\not{2}   \times   7   \times   \not{a}   \times   \not{a}   \times   \not{a}   \times   \not{a}   \times   \not{a}   \times   a   \times   a}{\not{2}   \times   \not{a}   \times   \not{a}   \times   \not{a}   \times   \not{a}   \times   \not{a}}\)

= \(\frac{14a^{7}}{2a^{5}}\)

= \(\frac{14}{2} \times \frac{a^{7}}{a^{5}}\)

Now we will write the each numerical part \((\frac{14}{2})\) in the expanded form and then cancel the terms which are common to both numerator and denominator and in case of literal part subtract the smaller power of a literal from bigger power of the same literal.

= \(\frac{\not{2} \times 7}{\not{2}} \times a^{7 - 5}\)

= \(\frac{81p^{3}q^{6}}{27p^{6}q^{3}}\)

= \(\frac{81}{27} \times \frac{p^{3}q^{6}}{p^{6}q^{3}}\)

Now we will write the each numerical part (\frac{81}{27}) in the expanded form and then cancel the terms which are common to both numerator and denominator and in case of literal part subtract the smaller power of a literal from bigger power of the same literal.

= \(\frac{\not{3}   \times   \not{3}   \times   \not{3}   \times   3}{\not{3}   \times   \not{3}   \times   \not{3}}   \times   \frac{q^{6   -   3}}{p^{6   -   3}}\)

= \(3 \times \frac{q^{3}}{p^{3}}\)

= \(\frac{3q^{3}}{p^{3}}\)

● Terms of an Algebraic Expression

Types of Algebraic Expressions

Degree of a Polynomial

Addition of Polynomials

Subtraction of Polynomials

Power of Literal Quantities

Multiplication of Two Monomials

Multiplication of Polynomial by Monomial

Multiplication of two Binomials

Division of Monomials

Algebra Page

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