There is something I don't understand about algebra: It has been around for thousands of years, yet no one has ever found out what the value of "x" or "y" really is.

Mathematics has 25%formulas, 25%proofs and apply 25%thinking and 25%efforts. In real life situations proofs are nothing but already existed stories(we know the solutions from all experienced people). formulas are nothing but goals. we have so many goals b

M4Math helped me a lot.

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