Evaluate the following when x=-3, if possible.

(a)-x
(b)/x/
(c)-x^2
(d)-(1+x)

2 answers

I'll do (a):
substitute -3 for x to get
-(-3) = 3

Proceed similarly for the rest. Post your answers for a check if you wish.
(b)/-3/=/3/
(c)-3^2=-9
(d)-(1+(-3))
is this right? Please help!!