10x^2+2.784x=27.84

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Solution for 10x^2+2.784x=27.84 equation:


Simplifying
10x2 + 2.784x = 27.84

Reorder the terms:
2.784x + 10x2 = 27.84

Solving
2.784x + 10x2 = 27.84

Solving for variable 'x'.

Reorder the terms:
-27.84 + 2.784x + 10x2 = 27.84 + -27.84

Combine like terms: 27.84 + -27.84 = 0.00
-27.84 + 2.784x + 10x2 = 0.00

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

Divide each side by '10'.
-2.784 + 0.2784x + x2 = 0.00

Move the constant term to the right:

Add '2.784' to each side of the equation.
-2.784 + 0.2784x + 2.784 + x2 = 0.00 + 2.784

Reorder the terms:
-2.784 + 2.784 + 0.2784x + x2 = 0.00 + 2.784

Combine like terms: -2.784 + 2.784 = 0.000
0.000 + 0.2784x + x2 = 0.00 + 2.784
0.2784x + x2 = 0.00 + 2.784

Combine like terms: 0.00 + 2.784 = 2.784
0.2784x + x2 = 2.784

The x term is 0.2784x.  Take half its coefficient (0.1392).
Square it (0.01937664) and add it to both sides.

Add '0.01937664' to each side of the equation.
0.2784x + 0.01937664 + x2 = 2.784 + 0.01937664

Reorder the terms:
0.01937664 + 0.2784x + x2 = 2.784 + 0.01937664

Combine like terms: 2.784 + 0.01937664 = 2.80337664
0.01937664 + 0.2784x + x2 = 2.80337664

Factor a perfect square on the left side:
(x + 0.1392)(x + 0.1392) = 2.80337664

Calculate the square root of the right side: 1.674328713

Break this problem into two subproblems by setting 
(x + 0.1392) equal to 1.674328713 and -1.674328713.

Subproblem 1

x + 0.1392 = 1.674328713 Simplifying x + 0.1392 = 1.674328713 Reorder the terms: 0.1392 + x = 1.674328713 Solving 0.1392 + x = 1.674328713 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1392' to each side of the equation. 0.1392 + -0.1392 + x = 1.674328713 + -0.1392 Combine like terms: 0.1392 + -0.1392 = 0.0000 0.0000 + x = 1.674328713 + -0.1392 x = 1.674328713 + -0.1392 Combine like terms: 1.674328713 + -0.1392 = 1.535128713 x = 1.535128713 Simplifying x = 1.535128713

Subproblem 2

x + 0.1392 = -1.674328713 Simplifying x + 0.1392 = -1.674328713 Reorder the terms: 0.1392 + x = -1.674328713 Solving 0.1392 + x = -1.674328713 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1392' to each side of the equation. 0.1392 + -0.1392 + x = -1.674328713 + -0.1392 Combine like terms: 0.1392 + -0.1392 = 0.0000 0.0000 + x = -1.674328713 + -0.1392 x = -1.674328713 + -0.1392 Combine like terms: -1.674328713 + -0.1392 = -1.813528713 x = -1.813528713 Simplifying x = -1.813528713

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.535128713, -1.813528713}

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