Question

Simplify a +(a-b)+b +(b-a)



please answer !!!!​

Answer 1

Answer:

${a}^{2} - {b}^{2}$

Answer 2

Answer:

have u studying ??

Step-by-step explanation:

simplifying, a (a-b) + b(a-b)

= (a+b)(a-b)

= a² - b²