Question

sabendo que x=-1,calcule o valor das expressões. a)x+2 b)-x+2 c) x-2 d)-x-2

Answer 1

a) -1 + 2 = 1
b) -(-1) + 2 =
+1 + 2 = 3
c) -1 -2 = -3
d) -(-1) - 2 =
+1 -2 = -1

Answer 2

A) x+2= -1+2= 1
B)-X+2= 1+2=3
C) x-2=-1-2=-3
D)-x-2=1-2=-1