2.4x^2-3.5x=2.2

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Solution for 2.4x^2-3.5x=2.2 equation:


Simplifying
2.4x2 + -3.5x = 2.2

Reorder the terms:
-3.5x + 2.4x2 = 2.2

Solving
-3.5x + 2.4x2 = 2.2

Solving for variable 'x'.

Reorder the terms:
-2.2 + -3.5x + 2.4x2 = 2.2 + -2.2

Combine like terms: 2.2 + -2.2 = 0.0
-2.2 + -3.5x + 2.4x2 = 0.0

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

Divide each side by '2.4'.
-0.9166666667 + -1.458333333x + x2 = 0

Move the constant term to the right:

Add '0.9166666667' to each side of the equation.
-0.9166666667 + -1.458333333x + 0.9166666667 + x2 = 0 + 0.9166666667

Reorder the terms:
-0.9166666667 + 0.9166666667 + -1.458333333x + x2 = 0 + 0.9166666667

Combine like terms: -0.9166666667 + 0.9166666667 = 0.0000000000
0.0000000000 + -1.458333333x + x2 = 0 + 0.9166666667
-1.458333333x + x2 = 0 + 0.9166666667

Combine like terms: 0 + 0.9166666667 = 0.9166666667
-1.458333333x + x2 = 0.9166666667

The x term is -1.458333333x.  Take half its coefficient (-0.7291666665).
Square it (0.5316840275) and add it to both sides.

Add '0.5316840275' to each side of the equation.
-1.458333333x + 0.5316840275 + x2 = 0.9166666667 + 0.5316840275

Reorder the terms:
0.5316840275 + -1.458333333x + x2 = 0.9166666667 + 0.5316840275

Combine like terms: 0.9166666667 + 0.5316840275 = 1.4483506942
0.5316840275 + -1.458333333x + x2 = 1.4483506942

Factor a perfect square on the left side:
(x + -0.7291666665)(x + -0.7291666665) = 1.4483506942

Calculate the square root of the right side: 1.203474426

Break this problem into two subproblems by setting 
(x + -0.7291666665) equal to 1.203474426 and -1.203474426.

Subproblem 1

x + -0.7291666665 = 1.203474426 Simplifying x + -0.7291666665 = 1.203474426 Reorder the terms: -0.7291666665 + x = 1.203474426 Solving -0.7291666665 + x = 1.203474426 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.7291666665' to each side of the equation. -0.7291666665 + 0.7291666665 + x = 1.203474426 + 0.7291666665 Combine like terms: -0.7291666665 + 0.7291666665 = 0.0000000000 0.0000000000 + x = 1.203474426 + 0.7291666665 x = 1.203474426 + 0.7291666665 Combine like terms: 1.203474426 + 0.7291666665 = 1.9326410925 x = 1.9326410925 Simplifying x = 1.9326410925

Subproblem 2

x + -0.7291666665 = -1.203474426 Simplifying x + -0.7291666665 = -1.203474426 Reorder the terms: -0.7291666665 + x = -1.203474426 Solving -0.7291666665 + x = -1.203474426 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.7291666665' to each side of the equation. -0.7291666665 + 0.7291666665 + x = -1.203474426 + 0.7291666665 Combine like terms: -0.7291666665 + 0.7291666665 = 0.0000000000 0.0000000000 + x = -1.203474426 + 0.7291666665 x = -1.203474426 + 0.7291666665 Combine like terms: -1.203474426 + 0.7291666665 = -0.4743077595 x = -0.4743077595 Simplifying x = -0.4743077595

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.9326410925, -0.4743077595}

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