a(a)+a+400=0

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Solution for a(a)+a+400=0 equation:


Simplifying
a(a) + a + 400 = 0

Multiply a * a
a2 + a + 400 = 0

Reorder the terms:
400 + a + a2 = 0

Solving
400 + a + a2 = 0

Solving for variable 'a'.

Begin completing the square.

Move the constant term to the right:

Add '-400' to each side of the equation.
400 + a + -400 + a2 = 0 + -400

Reorder the terms:
400 + -400 + a + a2 = 0 + -400

Combine like terms: 400 + -400 = 0
0 + a + a2 = 0 + -400
a + a2 = 0 + -400

Combine like terms: 0 + -400 = -400
a + a2 = -400

The a term is a.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
a + 0.25 + a2 = -400 + 0.25

Reorder the terms:
0.25 + a + a2 = -400 + 0.25

Combine like terms: -400 + 0.25 = -399.75
0.25 + a + a2 = -399.75

Factor a perfect square on the left side:
(a + 0.5)(a + 0.5) = -399.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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