Question

(12pq-9r)sq. - (9pq+ 4r)sq. factorize​

Answer 1

Answer:

=(21pq-5r)(3pq-13r)

Step-by-step explanation:

(12pq-9r)sq. - (9pq+ 4r)sq.

[a^2-b^2=(a+b)(a-b)]

a^2=(12pq-9r)^2; b^2= - (9pq+ 4r)^2

(12pq-9r+9pq+4r)(12pq-9r-9pq-4r)

(21pq-5r)(3pq-13r)

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