17. Using the identity a – b = (a + b) (a -b), find the value of (2x + y) – (2x – y). About the author Ximena

Step-by-step explanation: =(2x+y)-(2x-y) =2x+y-2x+y =2y This identity a-b=(a+b)(a-b) bcause you used negative sign to subtract Reply

Step-by-step explanation:=(2x+y)-(2x-y)

=2x+y-2x+y

=2y

This identity a-b=(a+b)(a-b)

bcause you used negative sign to subtract