Q. Simplify:
i've got up to
but i can't simplify it further unless is replaced by then i could work my way to the answer, but im not sure if that should be the right method
because of the rule,
btw the answer is
Q. Simplify:
i've got up to
but i can't simplify it further unless is replaced by then i could work my way to the answer, but im not sure if that should be the right method
because of the rule,
btw the answer is