x^2-4x+4+4x^2+16x+16=0

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Solution for x^2-4x+4+4x^2+16x+16=0 equation:


Simplifying
x2 + -4x + 4 + 4x2 + 16x + 16 = 0

Reorder the terms:
4 + 16 + -4x + 16x + x2 + 4x2 = 0

Combine like terms: 4 + 16 = 20
20 + -4x + 16x + x2 + 4x2 = 0

Combine like terms: -4x + 16x = 12x
20 + 12x + x2 + 4x2 = 0

Combine like terms: x2 + 4x2 = 5x2
20 + 12x + 5x2 = 0

Solving
20 + 12x + 5x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
5 the coefficient of the squared term: 

Divide each side by '5'.
4 + 2.4x + x2 = 0

Move the constant term to the right:

Add '-4' to each side of the equation.
4 + 2.4x + -4 + x2 = 0 + -4

Reorder the terms:
4 + -4 + 2.4x + x2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + 2.4x + x2 = 0 + -4
2.4x + x2 = 0 + -4

Combine like terms: 0 + -4 = -4
2.4x + x2 = -4

The x term is 2.4x.  Take half its coefficient (1.2).
Square it (1.44) and add it to both sides.

Add '1.44' to each side of the equation.
2.4x + 1.44 + x2 = -4 + 1.44

Reorder the terms:
1.44 + 2.4x + x2 = -4 + 1.44

Combine like terms: -4 + 1.44 = -2.56
1.44 + 2.4x + x2 = -2.56

Factor a perfect square on the left side:
(x + 1.2)(x + 1.2) = -2.56

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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