Using Veda's law, if two equations are known, write out the quadratic equation of one variable X1=8 X2=3;

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• 1. Weida's law for solving equations x. Y is the square of the equation x - 4x + 2 = 0 The value of the square of (X-Y) And the value of X / y + Y / X
• 2. Under what circumstances should we use Veda's law How to use in function or equation What kind of questions will be more specific?
• 3. Veda's law + two roots + solving quadratic equation with one variable Using Veda's law, if two equations are known, write out the quadratic equation of one variable X1=8 X2=3;
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• 19. Exponential formula is written as logarithmic formula: 4 ^ x = 1 / 6; 4 ^ x = 2. Please write the process. I just learned logarithm, Don't you have to write x = how much
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