4.9x^2-180x-2=0

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Solution for 4.9x^2-180x-2=0 equation:


Simplifying
4.9x2 + -180x + -2 = 0

Reorder the terms:
-2 + -180x + 4.9x2 = 0

Solving
-2 + -180x + 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'.
-0.4081632653 + -36.73469388x + x2 = 0

Move the constant term to the right:

Add '0.4081632653' to each side of the equation.
-0.4081632653 + -36.73469388x + 0.4081632653 + x2 = 0 + 0.4081632653

Reorder the terms:
-0.4081632653 + 0.4081632653 + -36.73469388x + x2 = 0 + 0.4081632653

Combine like terms: -0.4081632653 + 0.4081632653 = 0.0000000000
0.0000000000 + -36.73469388x + x2 = 0 + 0.4081632653
-36.73469388x + x2 = 0 + 0.4081632653

Combine like terms: 0 + 0.4081632653 = 0.4081632653
-36.73469388x + x2 = 0.4081632653

The x term is -36.73469388x.  Take half its coefficient (-18.36734694).
Square it (337.3594336) and add it to both sides.

Add '337.3594336' to each side of the equation.
-36.73469388x + 337.3594336 + x2 = 0.4081632653 + 337.3594336

Reorder the terms:
337.3594336 + -36.73469388x + x2 = 0.4081632653 + 337.3594336

Combine like terms: 0.4081632653 + 337.3594336 = 337.7675968653
337.3594336 + -36.73469388x + x2 = 337.7675968653

Factor a perfect square on the left side:
(x + -18.36734694)(x + -18.36734694) = 337.7675968653

Calculate the square root of the right side: 18.378454692

Break this problem into two subproblems by setting 
(x + -18.36734694) equal to 18.378454692 and -18.378454692.

Subproblem 1

x + -18.36734694 = 18.378454692 Simplifying x + -18.36734694 = 18.378454692 Reorder the terms: -18.36734694 + x = 18.378454692 Solving -18.36734694 + x = 18.378454692 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '18.36734694' to each side of the equation. -18.36734694 + 18.36734694 + x = 18.378454692 + 18.36734694 Combine like terms: -18.36734694 + 18.36734694 = 0.00000000 0.00000000 + x = 18.378454692 + 18.36734694 x = 18.378454692 + 18.36734694 Combine like terms: 18.378454692 + 18.36734694 = 36.745801632 x = 36.745801632 Simplifying x = 36.745801632

Subproblem 2

x + -18.36734694 = -18.378454692 Simplifying x + -18.36734694 = -18.378454692 Reorder the terms: -18.36734694 + x = -18.378454692 Solving -18.36734694 + x = -18.378454692 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '18.36734694' to each side of the equation. -18.36734694 + 18.36734694 + x = -18.378454692 + 18.36734694 Combine like terms: -18.36734694 + 18.36734694 = 0.00000000 0.00000000 + x = -18.378454692 + 18.36734694 x = -18.378454692 + 18.36734694 Combine like terms: -18.378454692 + 18.36734694 = -0.011107752 x = -0.011107752 Simplifying x = -0.011107752

Solution

The solution to the problem is based on the solutions from the subproblems. x = {36.745801632, -0.011107752}

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