1.

Using the identity , find the following...1. (5p-7q) (5p-7q){Don't send irrelevant answers Warning : it would be reported..}​

Answer»

ANSWER:

(5P-7Q)(5p-7q)

(5p-7q)²

we KNOW that (a-b)²=a²+b²-2ab

so,(5p-7q)²=(5p)²+(7q)²-2(5p)(7q)

=25p²+49q²-70pq



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