0.0079x^2+0.057x=629.5-0.54x^2

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Solution for 0.0079x^2+0.057x=629.5-0.54x^2 equation:


Simplifying
0.0079x2 + 0.057x = 629.5 + -0.54x2

Reorder the terms:
0.057x + 0.0079x2 = 629.5 + -0.54x2

Solving
0.057x + 0.0079x2 = 629.5 + -0.54x2

Solving for variable 'x'.

Reorder the terms:
-629.5 + 0.057x + 0.0079x2 + 0.54x2 = 629.5 + -0.54x2 + -629.5 + 0.54x2

Combine like terms: 0.0079x2 + 0.54x2 = 0.5479x2
-629.5 + 0.057x + 0.5479x2 = 629.5 + -0.54x2 + -629.5 + 0.54x2

Reorder the terms:
-629.5 + 0.057x + 0.5479x2 = 629.5 + -629.5 + -0.54x2 + 0.54x2

Combine like terms: 629.5 + -629.5 = 0.0
-629.5 + 0.057x + 0.5479x2 = 0.0 + -0.54x2 + 0.54x2
-629.5 + 0.057x + 0.5479x2 = -0.54x2 + 0.54x2

Combine like terms: -0.54x2 + 0.54x2 = 0.00
-629.5 + 0.057x + 0.5479x2 = 0.00

Begin completing the square.  Divide all terms by
0.5479 the coefficient of the squared term: 

Divide each side by '0.5479'.
-1148.932287 + 0.1040335828x + x2 = 0

Move the constant term to the right:

Add '1148.932287' to each side of the equation.
-1148.932287 + 0.1040335828x + 1148.932287 + x2 = 0 + 1148.932287

Reorder the terms:
-1148.932287 + 1148.932287 + 0.1040335828x + x2 = 0 + 1148.932287

Combine like terms: -1148.932287 + 1148.932287 = 0.000000
0.000000 + 0.1040335828x + x2 = 0 + 1148.932287
0.1040335828x + x2 = 0 + 1148.932287

Combine like terms: 0 + 1148.932287 = 1148.932287
0.1040335828x + x2 = 1148.932287

The x term is 0.1040335828x.  Take half its coefficient (0.0520167914).
Square it (0.002705746588) and add it to both sides.

Add '0.002705746588' to each side of the equation.
0.1040335828x + 0.002705746588 + x2 = 1148.932287 + 0.002705746588

Reorder the terms:
0.002705746588 + 0.1040335828x + x2 = 1148.932287 + 0.002705746588

Combine like terms: 1148.932287 + 0.002705746588 = 1148.934992746588
0.002705746588 + 0.1040335828x + x2 = 1148.934992746588

Factor a perfect square on the left side:
(x + 0.0520167914)(x + 0.0520167914) = 1148.934992746588

Calculate the square root of the right side: 33.895943603

Break this problem into two subproblems by setting 
(x + 0.0520167914) equal to 33.895943603 and -33.895943603.

Subproblem 1

x + 0.0520167914 = 33.895943603 Simplifying x + 0.0520167914 = 33.895943603 Reorder the terms: 0.0520167914 + x = 33.895943603 Solving 0.0520167914 + x = 33.895943603 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.0520167914' to each side of the equation. 0.0520167914 + -0.0520167914 + x = 33.895943603 + -0.0520167914 Combine like terms: 0.0520167914 + -0.0520167914 = 0.0000000000 0.0000000000 + x = 33.895943603 + -0.0520167914 x = 33.895943603 + -0.0520167914 Combine like terms: 33.895943603 + -0.0520167914 = 33.8439268116 x = 33.8439268116 Simplifying x = 33.8439268116

Subproblem 2

x + 0.0520167914 = -33.895943603 Simplifying x + 0.0520167914 = -33.895943603 Reorder the terms: 0.0520167914 + x = -33.895943603 Solving 0.0520167914 + x = -33.895943603 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.0520167914' to each side of the equation. 0.0520167914 + -0.0520167914 + x = -33.895943603 + -0.0520167914 Combine like terms: 0.0520167914 + -0.0520167914 = 0.0000000000 0.0000000000 + x = -33.895943603 + -0.0520167914 x = -33.895943603 + -0.0520167914 Combine like terms: -33.895943603 + -0.0520167914 = -33.9479603944 x = -33.9479603944 Simplifying x = -33.9479603944

Solution

The solution to the problem is based on the solutions from the subproblems. x = {33.8439268116, -33.9479603944}

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