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x2 - 2x - 15 = 0

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12y ago

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What are the roots of the equation x2-6x plus 5?

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What is the LCM of 3and 5?

15


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You can find the roots with the quadratic equation (a = 1, b = 3, c = -5).


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It is: 30.


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The complex roots of an equation is any solution to that equation which cannot be expressed in terms of real numbers. For example, the equation 0 = x² + 5 does not have any solution in real numbers. But in complex numbers, it has solutions.


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A quadratic equation has two roots. They may be similar or dissimilar. As the highest power of a quadratic equation is 2 , there are 2 roots. Similarly, in the cubic equation, the highest power is 3, so it has three equal or unequal roots. So the highest power of an equation is the answer to the no of roots of that particular equation.


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The process of removing roots from a mathematical equation is called "solving" the equation.