Solving equation x2+8x=-15 by completing square,find third term

1.	Solving equation x2+8x=-15 by completing square,find third term
Answer» Equation : x² + 8X = - 15 Adding the half of coefficient of ' X ' on both sides we GET, x² + 8x + 4 = - 15 + 4 => ( x + 4 )² = - 11 Taking root on both sides we get, => x + 4 = √ - 11 √ - 11 is not possible as it is an unreal NUMBER . Hence the equation cannot be solved further. Hence the equation will have imaginary roots.

Answer»

Equation : x² + 8X = - 15

Adding the half of coefficient of ' X ' on both sides we GET,

x² + 8x + 4 = - 15 + 4

=> ( x + 4 )² = - 11

Taking root on both sides we get,

=> x + 4 = √ - 11

√ - 11 is not possible as it is an unreal NUMBER . Hence the equation cannot be solved further.

Hence the equation will have imaginary roots.

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Solving equation x2+8x=-15 by completing square,find third term

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