2.3x^2+4.6x+9=5

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Solution for 2.3x^2+4.6x+9=5 equation:


Simplifying
2.3x2 + 4.6x + 9 = 5

Reorder the terms:
9 + 4.6x + 2.3x2 = 5

Solving
9 + 4.6x + 2.3x2 = 5

Solving for variable 'x'.

Reorder the terms:
9 + -5 + 4.6x + 2.3x2 = 5 + -5

Combine like terms: 9 + -5 = 4
4 + 4.6x + 2.3x2 = 5 + -5

Combine like terms: 5 + -5 = 0
4 + 4.6x + 2.3x2 = 0

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

Divide each side by '2.3'.
1.739130435 + 2x + x2 = 0

Move the constant term to the right:

Add '-1.739130435' to each side of the equation.
1.739130435 + 2x + -1.739130435 + x2 = 0 + -1.739130435

Reorder the terms:
1.739130435 + -1.739130435 + 2x + x2 = 0 + -1.739130435

Combine like terms: 1.739130435 + -1.739130435 = 0.000000000
0.000000000 + 2x + x2 = 0 + -1.739130435
2x + x2 = 0 + -1.739130435

Combine like terms: 0 + -1.739130435 = -1.739130435
2x + x2 = -1.739130435

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 = -1.739130435 + 1

Reorder the terms:
1 + 2x + x2 = -1.739130435 + 1

Combine like terms: -1.739130435 + 1 = -0.739130435
1 + 2x + x2 = -0.739130435

Factor a perfect square on the left side:
(x + 1)(x + 1) = -0.739130435

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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