Question 685837
It is less confusing, I think if I just replace
a and b with negative numbers
{{{ a = -3 }}}
{{{ b = -5 }}}
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a) 
-a(a+b)
-(-3)*( -3-5 )
3*(-8)
-24 
negative
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b)
(b-a)
( -5-(-3) )
-5 + 3
-2
( the only reason this is negative, is
because I picked b to be more negative than a )
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c) 
(a+b)
( -3 -5 )
(-8)
negative
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d)
 -a/b 
-(-3) / (-5)
3/(-5)
-(3/5)
negative