Question

a(a-b) - b(b-a) remove blackheads and simplify if possible by collecting like terms​

Answer 1

Answer:

(a+b) (a-b)

Step-by-step explanation:

a(a-b) - b(b-a) = a²- ab - b² + ba

ba can also be written as ab

∴ a²- ab - b² + ab =a²-b²

⇒ As we can take off ab and -ab

so it becomes a²-b²

a²-b² = (a+b) (a-b)