-4.9x^2+12.5x+150=0

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Solution for -4.9x^2+12.5x+150=0 equation:


Simplifying
-4.9x2 + 12.5x + 150 = 0

Reorder the terms:
150 + 12.5x + -4.9x2 = 0

Solving
150 + 12.5x + -4.9x2 = 0

Solving for variable 'x'.

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

Divide each side by '-4.9'.
-30.6122449 + -2.551020408x + x2 = 0

Move the constant term to the right:

Add '30.6122449' to each side of the equation.
-30.6122449 + -2.551020408x + 30.6122449 + x2 = 0 + 30.6122449

Reorder the terms:
-30.6122449 + 30.6122449 + -2.551020408x + x2 = 0 + 30.6122449

Combine like terms: -30.6122449 + 30.6122449 = 0.0000000
0.0000000 + -2.551020408x + x2 = 0 + 30.6122449
-2.551020408x + x2 = 0 + 30.6122449

Combine like terms: 0 + 30.6122449 = 30.6122449
-2.551020408x + x2 = 30.6122449

The x term is -2.551020408x.  Take half its coefficient (-1.275510204).
Square it (1.626926281) and add it to both sides.

Add '1.626926281' to each side of the equation.
-2.551020408x + 1.626926281 + x2 = 30.6122449 + 1.626926281

Reorder the terms:
1.626926281 + -2.551020408x + x2 = 30.6122449 + 1.626926281

Combine like terms: 30.6122449 + 1.626926281 = 32.239171181
1.626926281 + -2.551020408x + x2 = 32.239171181

Factor a perfect square on the left side:
(x + -1.275510204)(x + -1.275510204) = 32.239171181

Calculate the square root of the right side: 5.677954841

Break this problem into two subproblems by setting 
(x + -1.275510204) equal to 5.677954841 and -5.677954841.

Subproblem 1

x + -1.275510204 = 5.677954841 Simplifying x + -1.275510204 = 5.677954841 Reorder the terms: -1.275510204 + x = 5.677954841 Solving -1.275510204 + x = 5.677954841 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.275510204' to each side of the equation. -1.275510204 + 1.275510204 + x = 5.677954841 + 1.275510204 Combine like terms: -1.275510204 + 1.275510204 = 0.000000000 0.000000000 + x = 5.677954841 + 1.275510204 x = 5.677954841 + 1.275510204 Combine like terms: 5.677954841 + 1.275510204 = 6.953465045 x = 6.953465045 Simplifying x = 6.953465045

Subproblem 2

x + -1.275510204 = -5.677954841 Simplifying x + -1.275510204 = -5.677954841 Reorder the terms: -1.275510204 + x = -5.677954841 Solving -1.275510204 + x = -5.677954841 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.275510204' to each side of the equation. -1.275510204 + 1.275510204 + x = -5.677954841 + 1.275510204 Combine like terms: -1.275510204 + 1.275510204 = 0.000000000 0.000000000 + x = -5.677954841 + 1.275510204 x = -5.677954841 + 1.275510204 Combine like terms: -5.677954841 + 1.275510204 = -4.402444637 x = -4.402444637 Simplifying x = -4.402444637

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.953465045, -4.402444637}

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