40=.012x^2-.543x+35.724

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Solution for 40=.012x^2-.543x+35.724 equation:


Simplifying
40 = 0.012x2 + -0.543x + 35.724

Reorder the terms:
40 = 35.724 + -0.543x + 0.012x2

Solving
40 = 35.724 + -0.543x + 0.012x2

Solving for variable 'x'.

Combine like terms: 40 + -35.724 = 4.276
4.276 + 0.543x + -0.012x2 = 35.724 + -0.543x + 0.012x2 + -35.724 + 0.543x + -0.012x2

Reorder the terms:
4.276 + 0.543x + -0.012x2 = 35.724 + -35.724 + -0.543x + 0.543x + 0.012x2 + -0.012x2

Combine like terms: 35.724 + -35.724 = 0.000
4.276 + 0.543x + -0.012x2 = 0.000 + -0.543x + 0.543x + 0.012x2 + -0.012x2
4.276 + 0.543x + -0.012x2 = -0.543x + 0.543x + 0.012x2 + -0.012x2

Combine like terms: -0.543x + 0.543x = 0.000
4.276 + 0.543x + -0.012x2 = 0.000 + 0.012x2 + -0.012x2
4.276 + 0.543x + -0.012x2 = 0.012x2 + -0.012x2

Combine like terms: 0.012x2 + -0.012x2 = 0.000
4.276 + 0.543x + -0.012x2 = 0.000

Begin completing the square.  Divide all terms by
-0.012 the coefficient of the squared term: 

Divide each side by '-0.012'.
-356.3333333 + -45.25x + x2 = 0

Move the constant term to the right:

Add '356.3333333' to each side of the equation.
-356.3333333 + -45.25x + 356.3333333 + x2 = 0 + 356.3333333

Reorder the terms:
-356.3333333 + 356.3333333 + -45.25x + x2 = 0 + 356.3333333

Combine like terms: -356.3333333 + 356.3333333 = 0.0000000
0.0000000 + -45.25x + x2 = 0 + 356.3333333
-45.25x + x2 = 0 + 356.3333333

Combine like terms: 0 + 356.3333333 = 356.3333333
-45.25x + x2 = 356.3333333

The x term is -45.25x.  Take half its coefficient (-22.625).
Square it (511.890625) and add it to both sides.

Add '511.890625' to each side of the equation.
-45.25x + 511.890625 + x2 = 356.3333333 + 511.890625

Reorder the terms:
511.890625 + -45.25x + x2 = 356.3333333 + 511.890625

Combine like terms: 356.3333333 + 511.890625 = 868.2239583
511.890625 + -45.25x + x2 = 868.2239583

Factor a perfect square on the left side:
(x + -22.625)(x + -22.625) = 868.2239583

Calculate the square root of the right side: 29.4656403

Break this problem into two subproblems by setting 
(x + -22.625) equal to 29.4656403 and -29.4656403.

Subproblem 1

x + -22.625 = 29.4656403 Simplifying x + -22.625 = 29.4656403 Reorder the terms: -22.625 + x = 29.4656403 Solving -22.625 + x = 29.4656403 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '22.625' to each side of the equation. -22.625 + 22.625 + x = 29.4656403 + 22.625 Combine like terms: -22.625 + 22.625 = 0.000 0.000 + x = 29.4656403 + 22.625 x = 29.4656403 + 22.625 Combine like terms: 29.4656403 + 22.625 = 52.0906403 x = 52.0906403 Simplifying x = 52.0906403

Subproblem 2

x + -22.625 = -29.4656403 Simplifying x + -22.625 = -29.4656403 Reorder the terms: -22.625 + x = -29.4656403 Solving -22.625 + x = -29.4656403 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '22.625' to each side of the equation. -22.625 + 22.625 + x = -29.4656403 + 22.625 Combine like terms: -22.625 + 22.625 = 0.000 0.000 + x = -29.4656403 + 22.625 x = -29.4656403 + 22.625 Combine like terms: -29.4656403 + 22.625 = -6.8406403 x = -6.8406403 Simplifying x = -6.8406403

Solution

The solution to the problem is based on the solutions from the subproblems. x = {52.0906403, -6.8406403}

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