Factorize by grouping the terms (two or more) means that we need to group the terms which have common factors before factoring.
Method to factorize by grouping the terms:
(i) From the groups of the given expression a common factor can be taken out from each group.
(ii) Factorize each group
(iii) Now take out the factor common to group formed.
Now we will learn how to factorize by grouping two or more terms.
Solved examples to factorize by grouping the terms:
1. Factorize grouping the following expressions:
= x(x - 3) - y(x - 3)
= (x - 3) (x – y)
2. How to factorize by grouping the following expressions?
(ii) pr + qr - ps - qs
Solution:
pr + qr - ps - qs
= r(p + q) - s(p + q)
= (p + q) (r - s)
(iii) mx - my - nx - ny
Solution:
mx - my - nx - ny
= m(x - y) - n(x - y)
= (x - y) (m - n)
3. How to factorize by grouping the algebraic expressions?
(i) a^{2}c^{2} + acd + abc + bd= b(a - y) - y(a - y)
= (a - y) (b - y)
4. Factorize the expressions:
(i) x^{4} + x^{3} + 2x + 28th Grade Math Practice
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