Answer:
27
Step-by-step explanation:
19+x/2=23
19+x=46
x=27
or 19-23=4
23+4=27
37
Use the given functions to set up and simplify
a + b = + 2 = 2 = , thus
(a + b)² = ( )² = × = =
0.5
If you add 0.5 to -0.5, it will equal 0.