Follow up on Math P1 Common Test grade 11

I am not doubting the integrity of the persons who set the paper, s/he/they is/are at that level because of expertise clearly considered.

The concern I have is that of asking someone who does not understand the symbolism (and meaning attacked) used in math. One typographical error can mean something else in math. Take for an example and inequality sign replace with an equal sign in the equation:

(-x + 7)(x + 5) <=0 , the solution here will be x<=-5 or x>=7.
But if there is an = sign only, the solution is totally distinct,
the solution becomes x = -5 or x = 7.

At the same time we need to note that if we had a division as (-x + 7)/(x + 5) <=0 the proviso will be required; as x cannot be equal to -5. That is why math is very strict with symbols!

I think all mathematicians/scientists must learn to type their math/science question papers and memos. That will minimize unnecessary arguments and debates. We need to get to real business of fighting the problem of math performance in our schools, not fighting clerks that take incorrect math or erroneous papers and memos. After all, we all do mistakes when we type, but unfortunately math does not like mistakes. It is a very strict subject, hence we need to blame the mathematician for incorrect math, not the typist or clerk!

Comments welcome!