Question

(1/7xy + 3/5yz) (1/7xy - 3/5yz)​

Answer 1

Answer:

Step-by-step explanation:

This question is in the form of( a+b)(a-b)

(a+b)(a-b)=a square - b square

=1/49 x square y square-9/25 y square and z square

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