Question

Simplify. Be sure to state the restrictions on the variables.
u+3/u^2−9

Answer 1

u+3÷u^2-9

u+3÷(u-3)^2

Answer 2

1/(u-3)

Explanation:

(u+3)/(u^2-9)

(u+3)/[(u+3)(u-3)]

cancel out the (u+3)'s,

you get 1/(u-3).