Question

(2x - 7y )( 2x + 7y )​

Answer 1

Explanation:

(2x-7y)(2x+7y)

2x(2x+7y)-7y(2x+7y)

4x^2+14xy-14xy-49y^2

4x^2-49y^2

(2x)^2-(7y)^2

Answer 2

`{4x}^(2) - 49y^(2)`

Explanation:

Use (a - b) (a + b) = a^2 -b^2 to simplify the product.

`(2x)^(2) - (7y)^(2)`

To raise the product to a power, raise each factor to that power:

`{4x}^(2) - (7y)^(2) \\ {4x}^(2) - 49y^(2)`