Question

9d-7c+2b(7c-9d) factorise it

Answer 1

Answer:

9d-7c+2b(7c-9d)

9d-7c+14bc-18bd

9d-18bd-7c+14bc

9d(1-2b)-7c(1-2b)

(9d-7c)(1-2b)

Answer 2

Required Answer:-

Given to factorise:

• 9d - 7c + 2b(7c - 9d)

Solution:

This question can be solved by grouping method.

Here is the solution.

9d - 7c + 2b(7c - 9d)

= -1(7c - 9d) + 2b(7c - 9d) [Note the sign change]

= (7c - 9d)(2b - 1) [Taking 7c - 9d as common]

Hence, the factorised form of the polynomial is (7c - 9d)(2b - 1)

Answer:

• The factorised form of the polynomial is (7c - 9d)(2b - 1)