It's -(ab/3) .
The actual number that it is depends on the values of 'a' and 'b'. As soon as
either of them changes, -(ab/3) also immediately changes.
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so let's group and then factor ab+2a+3b+6= (ab+2a)+(3b+6)= a(b+2)+3(b+2)= (a+3)(b+2) and that is our final answer! Doctor Chuck
Yes
Then, if A nd B are scalars, it is not really surprising. If A and B are vectors then they have the same direction.
a+b(a+B)=ab