-60=-10.8x-4.9x^2

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Solution for -60=-10.8x-4.9x^2 equation:


Simplifying
-60 = -10.8x + -4.9x2

Solving
-60 = -10.8x + -4.9x2

Solving for variable 'x'.

Reorder the terms:
-60 + 10.8x + 4.9x2 = -10.8x + 10.8x + -4.9x2 + 4.9x2

Combine like terms: -10.8x + 10.8x = 0.0
-60 + 10.8x + 4.9x2 = 0.0 + -4.9x2 + 4.9x2
-60 + 10.8x + 4.9x2 = -4.9x2 + 4.9x2

Combine like terms: -4.9x2 + 4.9x2 = 0.0
-60 + 10.8x + 4.9x2 = 0.0

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

Divide each side by '4.9'.
-12.24489796 + 2.204081633x + x2 = 0

Move the constant term to the right:

Add '12.24489796' to each side of the equation.
-12.24489796 + 2.204081633x + 12.24489796 + x2 = 0 + 12.24489796

Reorder the terms:
-12.24489796 + 12.24489796 + 2.204081633x + x2 = 0 + 12.24489796

Combine like terms: -12.24489796 + 12.24489796 = 0.00000000
0.00000000 + 2.204081633x + x2 = 0 + 12.24489796
2.204081633x + x2 = 0 + 12.24489796

Combine like terms: 0 + 12.24489796 = 12.24489796
2.204081633x + x2 = 12.24489796

The x term is 2.204081633x.  Take half its coefficient (1.102040817).
Square it (1.214493962) and add it to both sides.

Add '1.214493962' to each side of the equation.
2.204081633x + 1.214493962 + x2 = 12.24489796 + 1.214493962

Reorder the terms:
1.214493962 + 2.204081633x + x2 = 12.24489796 + 1.214493962

Combine like terms: 12.24489796 + 1.214493962 = 13.459391922
1.214493962 + 2.204081633x + x2 = 13.459391922

Factor a perfect square on the left side:
(x + 1.102040817)(x + 1.102040817) = 13.459391922

Calculate the square root of the right side: 3.668704393

Break this problem into two subproblems by setting 
(x + 1.102040817) equal to 3.668704393 and -3.668704393.

Subproblem 1

x + 1.102040817 = 3.668704393 Simplifying x + 1.102040817 = 3.668704393 Reorder the terms: 1.102040817 + x = 3.668704393 Solving 1.102040817 + x = 3.668704393 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.102040817' to each side of the equation. 1.102040817 + -1.102040817 + x = 3.668704393 + -1.102040817 Combine like terms: 1.102040817 + -1.102040817 = 0.000000000 0.000000000 + x = 3.668704393 + -1.102040817 x = 3.668704393 + -1.102040817 Combine like terms: 3.668704393 + -1.102040817 = 2.566663576 x = 2.566663576 Simplifying x = 2.566663576

Subproblem 2

x + 1.102040817 = -3.668704393 Simplifying x + 1.102040817 = -3.668704393 Reorder the terms: 1.102040817 + x = -3.668704393 Solving 1.102040817 + x = -3.668704393 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.102040817' to each side of the equation. 1.102040817 + -1.102040817 + x = -3.668704393 + -1.102040817 Combine like terms: 1.102040817 + -1.102040817 = 0.000000000 0.000000000 + x = -3.668704393 + -1.102040817 x = -3.668704393 + -1.102040817 Combine like terms: -3.668704393 + -1.102040817 = -4.77074521 x = -4.77074521 Simplifying x = -4.77074521

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.566663576, -4.77074521}

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