6d - e + 3d - 2e( combine like terms)

Like terms are terms that have the same variable parts.

In your problem, 6d and 3d are like terms and can be combined.

-e and -2e are like terms and can be combined.

6d - e + 3d - 2e =

= 6d + 3d - e - 2e

= 9d - 3e

9d - 3e

use this formula:

p(a\b) = p(a and b)/p(b).

take it from here.

a)(x-2)^2+(y-1)^2=9

step-by-step explanation:

(picture explains)