i've posted about him before but he has reached a new all time low.
He thought that a rectangle has four lines of symmetry. A square is a kind of symetry and has four but yoou don't normally call a square a rectangle.
----------------------------------------------------------------------------- ontop of this, he : writes curly algabraic x the same as x as in multiplying, 1 and both kinds of brackets are virtually the same and 2 and z are written almost exactly the same.
the list does go on but they're are the hardest things to cope with when you are trying to learn algebra with someone like that.
You should be getting out of thinking of x as a multiplier symbol.
15xy
means 15 times x times y not 15 times y.
Later on if you continue maths you'll find it has a specific meaning in vector multiplication but in basic algebra if you see an x curly or otherwise you should assume it's an x and not a multiplication symbol