Einar Östmyren
Broschiertes Buch

New simple ways to solve equations

How to solve equations by mental arithmetic, which strengthens the capacity for thinking and improves the memory

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In this book I present a unique formula for quadratic equations, which is a rewriting of the p-q-formula. This rewriting resulted in the equations being solved almost twice as fast by the new formula, when it was compared in a test with the p-q-formula. Another test also showed that the new formula was much faster than the Vedic formula. The new formula is unique because the equations in the test were solved by mere mental calculation, which improves the memory and increases mental agility and intelligence.When I discovered that the middle coefficient in a quadratic equation contains all infor...