4.9x^2+3.072x-10=0

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Solution for 4.9x^2+3.072x-10=0 equation:


Simplifying
4.9x2 + 3.072x + -10 = 0

Reorder the terms:
-10 + 3.072x + 4.9x2 = 0

Solving
-10 + 3.072x + 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'.
-2.040816327 + 0.6269387755x + x2 = 0

Move the constant term to the right:

Add '2.040816327' to each side of the equation.
-2.040816327 + 0.6269387755x + 2.040816327 + x2 = 0 + 2.040816327

Reorder the terms:
-2.040816327 + 2.040816327 + 0.6269387755x + x2 = 0 + 2.040816327

Combine like terms: -2.040816327 + 2.040816327 = 0.000000000
0.000000000 + 0.6269387755x + x2 = 0 + 2.040816327
0.6269387755x + x2 = 0 + 2.040816327

Combine like terms: 0 + 2.040816327 = 2.040816327
0.6269387755x + x2 = 2.040816327

The x term is 0.6269387755x.  Take half its coefficient (0.3134693878).
Square it (0.09826305709) and add it to both sides.

Add '0.09826305709' to each side of the equation.
0.6269387755x + 0.09826305709 + x2 = 2.040816327 + 0.09826305709

Reorder the terms:
0.09826305709 + 0.6269387755x + x2 = 2.040816327 + 0.09826305709

Combine like terms: 2.040816327 + 0.09826305709 = 2.13907938409
0.09826305709 + 0.6269387755x + x2 = 2.13907938409

Factor a perfect square on the left side:
(x + 0.3134693878)(x + 0.3134693878) = 2.13907938409

Calculate the square root of the right side: 1.46255919

Break this problem into two subproblems by setting 
(x + 0.3134693878) equal to 1.46255919 and -1.46255919.

Subproblem 1

x + 0.3134693878 = 1.46255919 Simplifying x + 0.3134693878 = 1.46255919 Reorder the terms: 0.3134693878 + x = 1.46255919 Solving 0.3134693878 + x = 1.46255919 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3134693878' to each side of the equation. 0.3134693878 + -0.3134693878 + x = 1.46255919 + -0.3134693878 Combine like terms: 0.3134693878 + -0.3134693878 = 0.0000000000 0.0000000000 + x = 1.46255919 + -0.3134693878 x = 1.46255919 + -0.3134693878 Combine like terms: 1.46255919 + -0.3134693878 = 1.1490898022 x = 1.1490898022 Simplifying x = 1.1490898022

Subproblem 2

x + 0.3134693878 = -1.46255919 Simplifying x + 0.3134693878 = -1.46255919 Reorder the terms: 0.3134693878 + x = -1.46255919 Solving 0.3134693878 + x = -1.46255919 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3134693878' to each side of the equation. 0.3134693878 + -0.3134693878 + x = -1.46255919 + -0.3134693878 Combine like terms: 0.3134693878 + -0.3134693878 = 0.0000000000 0.0000000000 + x = -1.46255919 + -0.3134693878 x = -1.46255919 + -0.3134693878 Combine like terms: -1.46255919 + -0.3134693878 = -1.7760285778 x = -1.7760285778 Simplifying x = -1.7760285778

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.1490898022, -1.7760285778}

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