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What will be the solution of the quadratic equation ?

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answer is C.

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Detailed Solution

The Quadratic equation is

First, we will modify the given equation by making the coefficient as

as 1. Therefore dividing the whole equation by 2. we get,

Now we will add

to both sides of the equation to get a perfect square term on one side of the equation. Therefore, we get

We can write the above equation as

By using the algebraic identity

. we get

Now we will take the square root on the right-hand side of the equation
Therefore, we get
Question Image

We can write the value of x as

Hence, the quadratic equation is solved by completing the square.

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