4.9x^2-93.3x-125=0

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Solution for 4.9x^2-93.3x-125=0 equation:


Simplifying
4.9x2 + -93.3x + -125 = 0

Reorder the terms:
-125 + -93.3x + 4.9x2 = 0

Solving
-125 + -93.3x + 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'.
-25.51020408 + -19.04081633x + x2 = 0

Move the constant term to the right:

Add '25.51020408' to each side of the equation.
-25.51020408 + -19.04081633x + 25.51020408 + x2 = 0 + 25.51020408

Reorder the terms:
-25.51020408 + 25.51020408 + -19.04081633x + x2 = 0 + 25.51020408

Combine like terms: -25.51020408 + 25.51020408 = 0.00000000
0.00000000 + -19.04081633x + x2 = 0 + 25.51020408
-19.04081633x + x2 = 0 + 25.51020408

Combine like terms: 0 + 25.51020408 = 25.51020408
-19.04081633x + x2 = 25.51020408

The x term is -19.04081633x.  Take half its coefficient (-9.520408165).
Square it (90.63817163) and add it to both sides.

Add '90.63817163' to each side of the equation.
-19.04081633x + 90.63817163 + x2 = 25.51020408 + 90.63817163

Reorder the terms:
90.63817163 + -19.04081633x + x2 = 25.51020408 + 90.63817163

Combine like terms: 25.51020408 + 90.63817163 = 116.14837571
90.63817163 + -19.04081633x + x2 = 116.14837571

Factor a perfect square on the left side:
(x + -9.520408165)(x + -9.520408165) = 116.14837571

Calculate the square root of the right side: 10.777215582

Break this problem into two subproblems by setting 
(x + -9.520408165) equal to 10.777215582 and -10.777215582.

Subproblem 1

x + -9.520408165 = 10.777215582 Simplifying x + -9.520408165 = 10.777215582 Reorder the terms: -9.520408165 + x = 10.777215582 Solving -9.520408165 + x = 10.777215582 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9.520408165' to each side of the equation. -9.520408165 + 9.520408165 + x = 10.777215582 + 9.520408165 Combine like terms: -9.520408165 + 9.520408165 = 0.000000000 0.000000000 + x = 10.777215582 + 9.520408165 x = 10.777215582 + 9.520408165 Combine like terms: 10.777215582 + 9.520408165 = 20.297623747 x = 20.297623747 Simplifying x = 20.297623747

Subproblem 2

x + -9.520408165 = -10.777215582 Simplifying x + -9.520408165 = -10.777215582 Reorder the terms: -9.520408165 + x = -10.777215582 Solving -9.520408165 + x = -10.777215582 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9.520408165' to each side of the equation. -9.520408165 + 9.520408165 + x = -10.777215582 + 9.520408165 Combine like terms: -9.520408165 + 9.520408165 = 0.000000000 0.000000000 + x = -10.777215582 + 9.520408165 x = -10.777215582 + 9.520408165 Combine like terms: -10.777215582 + 9.520408165 = -1.256807417 x = -1.256807417 Simplifying x = -1.256807417

Solution

The solution to the problem is based on the solutions from the subproblems. x = {20.297623747, -1.256807417}

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