38x^2-4.8x-0.288=0

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Solution for 38x^2-4.8x-0.288=0 equation:


Simplifying
38x2 + -4.8x + -0.288 = 0

Reorder the terms:
-0.288 + -4.8x + 38x2 = 0

Solving
-0.288 + -4.8x + 38x2 = 0

Solving for variable 'x'.

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

Divide each side by '38'.
-0.007578947368 + -0.1263157895x + x2 = 0

Move the constant term to the right:

Add '0.007578947368' to each side of the equation.
-0.007578947368 + -0.1263157895x + 0.007578947368 + x2 = 0 + 0.007578947368

Reorder the terms:
-0.007578947368 + 0.007578947368 + -0.1263157895x + x2 = 0 + 0.007578947368

Combine like terms: -0.007578947368 + 0.007578947368 = 0.000000000000
0.000000000000 + -0.1263157895x + x2 = 0 + 0.007578947368
-0.1263157895x + x2 = 0 + 0.007578947368

Combine like terms: 0 + 0.007578947368 = 0.007578947368
-0.1263157895x + x2 = 0.007578947368

The x term is -0.1263157895x.  Take half its coefficient (-0.06315789475).
Square it (0.003988919669) and add it to both sides.

Add '0.003988919669' to each side of the equation.
-0.1263157895x + 0.003988919669 + x2 = 0.007578947368 + 0.003988919669

Reorder the terms:
0.003988919669 + -0.1263157895x + x2 = 0.007578947368 + 0.003988919669

Combine like terms: 0.007578947368 + 0.003988919669 = 0.011567867037
0.003988919669 + -0.1263157895x + x2 = 0.011567867037

Factor a perfect square on the left side:
(x + -0.06315789475)(x + -0.06315789475) = 0.011567867037

Calculate the square root of the right side: 0.107554019

Break this problem into two subproblems by setting 
(x + -0.06315789475) equal to 0.107554019 and -0.107554019.

Subproblem 1

x + -0.06315789475 = 0.107554019 Simplifying x + -0.06315789475 = 0.107554019 Reorder the terms: -0.06315789475 + x = 0.107554019 Solving -0.06315789475 + x = 0.107554019 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.06315789475' to each side of the equation. -0.06315789475 + 0.06315789475 + x = 0.107554019 + 0.06315789475 Combine like terms: -0.06315789475 + 0.06315789475 = 0.00000000000 0.00000000000 + x = 0.107554019 + 0.06315789475 x = 0.107554019 + 0.06315789475 Combine like terms: 0.107554019 + 0.06315789475 = 0.17071191375 x = 0.17071191375 Simplifying x = 0.17071191375

Subproblem 2

x + -0.06315789475 = -0.107554019 Simplifying x + -0.06315789475 = -0.107554019 Reorder the terms: -0.06315789475 + x = -0.107554019 Solving -0.06315789475 + x = -0.107554019 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.06315789475' to each side of the equation. -0.06315789475 + 0.06315789475 + x = -0.107554019 + 0.06315789475 Combine like terms: -0.06315789475 + 0.06315789475 = 0.00000000000 0.00000000000 + x = -0.107554019 + 0.06315789475 x = -0.107554019 + 0.06315789475 Combine like terms: -0.107554019 + 0.06315789475 = -0.04439612425 x = -0.04439612425 Simplifying x = -0.04439612425

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.17071191375, -0.04439612425}

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