Expand the polynomial: (-a+b) (b-a)

a^2 - 2ab + b^2

Step-by-step explanation:

Step 1: Foil

(-a + b) (b - a)

(-a * b) + (-a * - a) + (b * b) + (b * - a)

-ab + a^2 + b^2 - ab

a^2 - 2ab + b^2

Answer: a^2 - 2ab + b^2

a² - 2ab + b²

Step-by-step explanation:

(-a+b) (b-a)

(b-a) (b-a)

(b-a) ²

b² - 2ab + a²

Or

a² - 2ab + b²