Question

1/2 (a+b)-(a-b)^2
What is the value of the expression when a=18 and b=14

Answer 1

your answer would be 0

Answer 2

`(1)/(2) (18 + 14) - (18 - 14) {}^(2)`

`(1)/(2) (32) - (4) {}^(2)`

`16 - 8`

`= 8`