x^2+25x+4.9=0

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Solution for x^2+25x+4.9=0 equation:


Simplifying
x2 + 25x + 4.9 = 0

Reorder the terms:
4.9 + 25x + x2 = 0

Solving
4.9 + 25x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-4.9' to each side of the equation.
4.9 + 25x + -4.9 + x2 = 0 + -4.9

Reorder the terms:
4.9 + -4.9 + 25x + x2 = 0 + -4.9

Combine like terms: 4.9 + -4.9 = 0.0
0.0 + 25x + x2 = 0 + -4.9
25x + x2 = 0 + -4.9

Combine like terms: 0 + -4.9 = -4.9
25x + x2 = -4.9

The x term is 25x.  Take half its coefficient (12.5).
Square it (156.25) and add it to both sides.

Add '156.25' to each side of the equation.
25x + 156.25 + x2 = -4.9 + 156.25

Reorder the terms:
156.25 + 25x + x2 = -4.9 + 156.25

Combine like terms: -4.9 + 156.25 = 151.35
156.25 + 25x + x2 = 151.35

Factor a perfect square on the left side:
(x + 12.5)(x + 12.5) = 151.35

Calculate the square root of the right side: 12.302438783

Break this problem into two subproblems by setting 
(x + 12.5) equal to 12.302438783 and -12.302438783.

Subproblem 1

x + 12.5 = 12.302438783 Simplifying x + 12.5 = 12.302438783 Reorder the terms: 12.5 + x = 12.302438783 Solving 12.5 + x = 12.302438783 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12.5' to each side of the equation. 12.5 + -12.5 + x = 12.302438783 + -12.5 Combine like terms: 12.5 + -12.5 = 0.0 0.0 + x = 12.302438783 + -12.5 x = 12.302438783 + -12.5 Combine like terms: 12.302438783 + -12.5 = -0.197561217 x = -0.197561217 Simplifying x = -0.197561217

Subproblem 2

x + 12.5 = -12.302438783 Simplifying x + 12.5 = -12.302438783 Reorder the terms: 12.5 + x = -12.302438783 Solving 12.5 + x = -12.302438783 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12.5' to each side of the equation. 12.5 + -12.5 + x = -12.302438783 + -12.5 Combine like terms: 12.5 + -12.5 = 0.0 0.0 + x = -12.302438783 + -12.5 x = -12.302438783 + -12.5 Combine like terms: -12.302438783 + -12.5 = -24.802438783 x = -24.802438783 Simplifying x = -24.802438783

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.197561217, -24.802438783}

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