rearranging the expression to form a leading to factorization
Answers
Answer:
In factorization by regrouping sometimes the terms of the given expression need to be arranged in suitable groups in such a way that all the groups have a common factor. After this arrangement factorization becomes easy.
Method of factoring terms:
Step 1: Arrange the terms of the given expression in groups in such a way that all the groups have a common factor.
Step 2: Factorize each group.
Step 3: Take out the factor which is common to each group.
Step-by-step explanation:
How to factorize the following expressions?
(i) a2 + bc + ab + ac
Solution:
The expression is a2 + bc + ab + ac
By suitably rearranging the terms, we have;
= a2 + ab + ac + bc
= a(a + b) + c(a + b)
= (a + b) (a + c).
(ii) ax2 + by2 + bx2 + ay2
Solution:
The expression is ax2 + by2 + bx2 + ay2
By suitably rearranging the terms, we have;
= ax2 + ay2 + bx2 + by2
= a(x2 + y2) + b(x2 + y2)
= (x2 + y2) (a + b)...