Question

(2x - 7y )( 2x + 7y )​

Answer 1

Answer:

${4x}^{2} - 49y^{2}$

Step-by-step 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:

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

Answer 2

Answer:

Step-by-step 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