5x+x^2=1.96

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Solution for 5x+x^2=1.96 equation:


Simplifying
5x + x2 = 1.96

Solving
5x + x2 = 1.96

Solving for variable 'x'.

Reorder the terms:
-1.96 + 5x + x2 = 1.96 + -1.96

Combine like terms: 1.96 + -1.96 = 0.00
-1.96 + 5x + x2 = 0.00

Begin completing the square.

Move the constant term to the right:

Add '1.96' to each side of the equation.
-1.96 + 5x + 1.96 + x2 = 0.00 + 1.96

Reorder the terms:
-1.96 + 1.96 + 5x + x2 = 0.00 + 1.96

Combine like terms: -1.96 + 1.96 = 0.00
0.00 + 5x + x2 = 0.00 + 1.96
5x + x2 = 0.00 + 1.96

Combine like terms: 0.00 + 1.96 = 1.96
5x + x2 = 1.96

The x term is 5x.  Take half its coefficient (2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
5x + 6.25 + x2 = 1.96 + 6.25

Reorder the terms:
6.25 + 5x + x2 = 1.96 + 6.25

Combine like terms: 1.96 + 6.25 = 8.21
6.25 + 5x + x2 = 8.21

Factor a perfect square on the left side:
(x + 2.5)(x + 2.5) = 8.21

Calculate the square root of the right side: 2.865309756

Break this problem into two subproblems by setting 
(x + 2.5) equal to 2.865309756 and -2.865309756.

Subproblem 1

x + 2.5 = 2.865309756 Simplifying x + 2.5 = 2.865309756 Reorder the terms: 2.5 + x = 2.865309756 Solving 2.5 + x = 2.865309756 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + x = 2.865309756 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = 2.865309756 + -2.5 x = 2.865309756 + -2.5 Combine like terms: 2.865309756 + -2.5 = 0.365309756 x = 0.365309756 Simplifying x = 0.365309756

Subproblem 2

x + 2.5 = -2.865309756 Simplifying x + 2.5 = -2.865309756 Reorder the terms: 2.5 + x = -2.865309756 Solving 2.5 + x = -2.865309756 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + x = -2.865309756 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = -2.865309756 + -2.5 x = -2.865309756 + -2.5 Combine like terms: -2.865309756 + -2.5 = -5.365309756 x = -5.365309756 Simplifying x = -5.365309756

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.365309756, -5.365309756}

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