Evaluate the following when x=-3, if possible.
(a)-x
(b)/x/
(c)-x^2
(d)-(1+x)
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!!
To evaluate each expression, simply substitute the given value of x into the expression and perform the corresponding calculations. Let's evaluate each expression one by one:
(a) -x:
To evaluate -x when x = -3, substitute -3 into the expression:
-(x) = -(-3) = 3
(b) /x/:
To evaluate /x/ when x = -3, substitute -3 into the expression:
/(-3)/ = 3 (Since the absolute value of -3 is 3)
(c) -x^2:
To evaluate -x^2 when x = -3, substitute -3 into the expression:
-(-3)^2 = -(9) = -9
(d) -(1+x):
To evaluate -(1+x) when x = -3, substitute -3 into the expression:
- (1 + (-3)) = -(-2) = 2
So, the evaluations are:
(a) -x = 3
(b) /x/ = 3
(c) -x^2 = -9
(d) -(1+x) = 2