Question

1/2 (a+b)-(a-b)2 what is the vule of the expression when a=18 and b=14

Answer 1

$when \: a = 18 \: and \: b = 14 \\ \frac{1}{2} (18 + 14) - (18 - 14) ^{2} \\ = 16 - ( {4}^{2} ) \\ = 16 - 16 \\ = 0$
Hope this helps.