Question

Find the product (7x
+ 11y ) ( − ) and verify the result for x = 2 and y = 1​

Answer 1

Answer:

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Step-by-step explanation:

Given (7x+11y)(7x−11y)

By using the formula (a+b)(a−b)=a 2

−b 2

Applying the formula we get

(7x+11y)(7x−11y)=(7x) 2

−(11y) 2

(7x+11y)(7x−11y)=49x 2

−121y 2