1.2454x^2+34.9x-19.6=0

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Solution for 1.2454x^2+34.9x-19.6=0 equation:


Simplifying
1.2454x2 + 34.9x + -19.6 = 0

Reorder the terms:
-19.6 + 34.9x + 1.2454x2 = 0

Solving
-19.6 + 34.9x + 1.2454x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
1.2454 the coefficient of the squared term: 

Divide each side by '1.2454'.
-15.73791553 + 28.0231251x + x2 = 0

Move the constant term to the right:

Add '15.73791553' to each side of the equation.
-15.73791553 + 28.0231251x + 15.73791553 + x2 = 0 + 15.73791553

Reorder the terms:
-15.73791553 + 15.73791553 + 28.0231251x + x2 = 0 + 15.73791553

Combine like terms: -15.73791553 + 15.73791553 = 0.00000000
0.00000000 + 28.0231251x + x2 = 0 + 15.73791553
28.0231251x + x2 = 0 + 15.73791553

Combine like terms: 0 + 15.73791553 = 15.73791553
28.0231251x + x2 = 15.73791553

The x term is 28.0231251x.  Take half its coefficient (14.01156255).
Square it (196.3238851) and add it to both sides.

Add '196.3238851' to each side of the equation.
28.0231251x + 196.3238851 + x2 = 15.73791553 + 196.3238851

Reorder the terms:
196.3238851 + 28.0231251x + x2 = 15.73791553 + 196.3238851

Combine like terms: 15.73791553 + 196.3238851 = 212.06180063
196.3238851 + 28.0231251x + x2 = 212.06180063

Factor a perfect square on the left side:
(x + 14.01156255)(x + 14.01156255) = 212.06180063

Calculate the square root of the right side: 14.562341866

Break this problem into two subproblems by setting 
(x + 14.01156255) equal to 14.562341866 and -14.562341866.

Subproblem 1

x + 14.01156255 = 14.562341866 Simplifying x + 14.01156255 = 14.562341866 Reorder the terms: 14.01156255 + x = 14.562341866 Solving 14.01156255 + x = 14.562341866 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-14.01156255' to each side of the equation. 14.01156255 + -14.01156255 + x = 14.562341866 + -14.01156255 Combine like terms: 14.01156255 + -14.01156255 = 0.00000000 0.00000000 + x = 14.562341866 + -14.01156255 x = 14.562341866 + -14.01156255 Combine like terms: 14.562341866 + -14.01156255 = 0.550779316 x = 0.550779316 Simplifying x = 0.550779316

Subproblem 2

x + 14.01156255 = -14.562341866 Simplifying x + 14.01156255 = -14.562341866 Reorder the terms: 14.01156255 + x = -14.562341866 Solving 14.01156255 + x = -14.562341866 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-14.01156255' to each side of the equation. 14.01156255 + -14.01156255 + x = -14.562341866 + -14.01156255 Combine like terms: 14.01156255 + -14.01156255 = 0.00000000 0.00000000 + x = -14.562341866 + -14.01156255 x = -14.562341866 + -14.01156255 Combine like terms: -14.562341866 + -14.01156255 = -28.573904416 x = -28.573904416 Simplifying x = -28.573904416

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.550779316, -28.573904416}

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