Answer:

Explanation:
In order to simplify this expression, we are going to use the FOIL method.
(FOIL = first, outer, inner, last)
first
u * u = u²
outer
u * (-5) = -5u
inner
2 * u = 2u
last
2 * (-5) = -10
combine like terms
u² - 5u + 2u - 10
u² - 3u - 10