1.

Find the products: (7x+11y) (7x-11y)

Answer»

Given (7x+11y) (7x-11y)

By using the formula (a + b) (a – b) = a– b2

Applying the formula we get

(7x+11y) (7x-11y) = (7x)2-112

(7x+11y) (7x-11y)= 49x2-121



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