How do you simplify #5-[(-3i+4)-2i]#?
Now we have a negative sign outside brackets.
How do we interpret it?
There are two ways
(i) it is as if we are multiplying by
(ii) using simple properties of negative numbers i.e. negative of a negative is positive and negative of a positive is negative and hence again
In any case, it means we change all the signs inside the brackets and above is equal to