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

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

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

By using the formula (a + b) (a – b) = a2 – b2

Applying the formula we get

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

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

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