2x^2+4x+16=.45

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Solution for 2x^2+4x+16=.45 equation:


Simplifying
2x2 + 4x + 16 = 0.45

Reorder the terms:
16 + 4x + 2x2 = 0.45

Solving
16 + 4x + 2x2 = 0.45

Solving for variable 'x'.

Reorder the terms:
16 + -0.45 + 4x + 2x2 = 0.45 + -0.45

Combine like terms: 16 + -0.45 = 15.55
15.55 + 4x + 2x2 = 0.45 + -0.45

Combine like terms: 0.45 + -0.45 = 0.00
15.55 + 4x + 2x2 = 0.00

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

Divide each side by '2'.
7.775 + 2x + x2 = 0.00

Move the constant term to the right:

Add '-7.775' to each side of the equation.
7.775 + 2x + -7.775 + x2 = 0.00 + -7.775

Reorder the terms:
7.775 + -7.775 + 2x + x2 = 0.00 + -7.775

Combine like terms: 7.775 + -7.775 = 0.000
0.000 + 2x + x2 = 0.00 + -7.775
2x + x2 = 0.00 + -7.775

Combine like terms: 0.00 + -7.775 = -7.775
2x + x2 = -7.775

The x term is 2x.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2x + 1 + x2 = -7.775 + 1

Reorder the terms:
1 + 2x + x2 = -7.775 + 1

Combine like terms: -7.775 + 1 = -6.775
1 + 2x + x2 = -6.775

Factor a perfect square on the left side:
(x + 1)(x + 1) = -6.775

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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