-4.9x^2+2.98x+0.12=0

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Solution for -4.9x^2+2.98x+0.12=0 equation:


Simplifying
-4.9x2 + 2.98x + 0.12 = 0

Reorder the terms:
0.12 + 2.98x + -4.9x2 = 0

Solving
0.12 + 2.98x + -4.9x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-4.9 the coefficient of the squared term: 

Divide each side by '-4.9'.
-0.02448979592 + -0.6081632653x + x2 = 0

Move the constant term to the right:

Add '0.02448979592' to each side of the equation.
-0.02448979592 + -0.6081632653x + 0.02448979592 + x2 = 0 + 0.02448979592

Reorder the terms:
-0.02448979592 + 0.02448979592 + -0.6081632653x + x2 = 0 + 0.02448979592

Combine like terms: -0.02448979592 + 0.02448979592 = 0.00000000000
0.00000000000 + -0.6081632653x + x2 = 0 + 0.02448979592
-0.6081632653x + x2 = 0 + 0.02448979592

Combine like terms: 0 + 0.02448979592 = 0.02448979592
-0.6081632653x + x2 = 0.02448979592

The x term is -0.6081632653x.  Take half its coefficient (-0.3040816327).
Square it (0.09246563935) and add it to both sides.

Add '0.09246563935' to each side of the equation.
-0.6081632653x + 0.09246563935 + x2 = 0.02448979592 + 0.09246563935

Reorder the terms:
0.09246563935 + -0.6081632653x + x2 = 0.02448979592 + 0.09246563935

Combine like terms: 0.02448979592 + 0.09246563935 = 0.11695543527
0.09246563935 + -0.6081632653x + x2 = 0.11695543527

Factor a perfect square on the left side:
(x + -0.3040816327)(x + -0.3040816327) = 0.11695543527

Calculate the square root of the right side: 0.341987478

Break this problem into two subproblems by setting 
(x + -0.3040816327) equal to 0.341987478 and -0.341987478.

Subproblem 1

x + -0.3040816327 = 0.341987478 Simplifying x + -0.3040816327 = 0.341987478 Reorder the terms: -0.3040816327 + x = 0.341987478 Solving -0.3040816327 + x = 0.341987478 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3040816327' to each side of the equation. -0.3040816327 + 0.3040816327 + x = 0.341987478 + 0.3040816327 Combine like terms: -0.3040816327 + 0.3040816327 = 0.0000000000 0.0000000000 + x = 0.341987478 + 0.3040816327 x = 0.341987478 + 0.3040816327 Combine like terms: 0.341987478 + 0.3040816327 = 0.6460691107 x = 0.6460691107 Simplifying x = 0.6460691107

Subproblem 2

x + -0.3040816327 = -0.341987478 Simplifying x + -0.3040816327 = -0.341987478 Reorder the terms: -0.3040816327 + x = -0.341987478 Solving -0.3040816327 + x = -0.341987478 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3040816327' to each side of the equation. -0.3040816327 + 0.3040816327 + x = -0.341987478 + 0.3040816327 Combine like terms: -0.3040816327 + 0.3040816327 = 0.0000000000 0.0000000000 + x = -0.341987478 + 0.3040816327 x = -0.341987478 + 0.3040816327 Combine like terms: -0.341987478 + 0.3040816327 = -0.0379058453 x = -0.0379058453 Simplifying x = -0.0379058453

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.6460691107, -0.0379058453}

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