In completing the square method, considering the equation X^2 + 82x + the number to be added should be 1681 to make it a perfect square
The quadratic equation is an equation of the form
ax^2 + bx + c
The completing the square method is on of the methods of solving equations of the form above
The factor to be added on the both sides of the equation while using the completing the square method is
(b / 2a)^2
compared to the equation in the problem X^2 +82x
= (b / 2a)^2
= (82 / 2)^2
= (41)^2
= 1681
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