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Class 10 > Learn Exercise 4.3 > Find the roots of the following quadratic equations,...
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Find the roots of the following quadratic equations, if they exist, by the method of completing the square:

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The answers are in the form of On using the Quadratic formula, substituting the values in the Quadratic formula, we get substituting the quadratic formula, we get, substituting the values in the quadratic formula, we get However, the square of a number cannot be negative, hence it is not...
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The answers are in the form of 

On using the Quadratic formula, 

substituting the values in the Quadratic formula, 

we get 

substituting the quadratic formula,

we get, 

substituting the values in the quadratic formula, we get

However, the square of a number cannot be negative, hence it is not a real root.

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