5x^2-51x-2000=0

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Solution for 5x^2-51x-2000=0 equation:


Simplifying
5x2 + -51x + -2000 = 0

Reorder the terms:
-2000 + -51x + 5x2 = 0

Solving
-2000 + -51x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
-400 + -10.2x + x2 = 0

Move the constant term to the right:

Add '400' to each side of the equation.
-400 + -10.2x + 400 + x2 = 0 + 400

Reorder the terms:
-400 + 400 + -10.2x + x2 = 0 + 400

Combine like terms: -400 + 400 = 0
0 + -10.2x + x2 = 0 + 400
-10.2x + x2 = 0 + 400

Combine like terms: 0 + 400 = 400
-10.2x + x2 = 400

The x term is -10.2x.  Take half its coefficient (-5.1).
Square it (26.01) and add it to both sides.

Add '26.01' to each side of the equation.
-10.2x + 26.01 + x2 = 400 + 26.01

Reorder the terms:
26.01 + -10.2x + x2 = 400 + 26.01

Combine like terms: 400 + 26.01 = 426.01
26.01 + -10.2x + x2 = 426.01

Factor a perfect square on the left side:
(x + -5.1)(x + -5.1) = 426.01

Calculate the square root of the right side: 20.64000969

Break this problem into two subproblems by setting 
(x + -5.1) equal to 20.64000969 and -20.64000969.

Subproblem 1

x + -5.1 = 20.64000969 Simplifying x + -5.1 = 20.64000969 Reorder the terms: -5.1 + x = 20.64000969 Solving -5.1 + x = 20.64000969 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.1' to each side of the equation. -5.1 + 5.1 + x = 20.64000969 + 5.1 Combine like terms: -5.1 + 5.1 = 0.0 0.0 + x = 20.64000969 + 5.1 x = 20.64000969 + 5.1 Combine like terms: 20.64000969 + 5.1 = 25.74000969 x = 25.74000969 Simplifying x = 25.74000969

Subproblem 2

x + -5.1 = -20.64000969 Simplifying x + -5.1 = -20.64000969 Reorder the terms: -5.1 + x = -20.64000969 Solving -5.1 + x = -20.64000969 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.1' to each side of the equation. -5.1 + 5.1 + x = -20.64000969 + 5.1 Combine like terms: -5.1 + 5.1 = 0.0 0.0 + x = -20.64000969 + 5.1 x = -20.64000969 + 5.1 Combine like terms: -20.64000969 + 5.1 = -15.54000969 x = -15.54000969 Simplifying x = -15.54000969

Solution

The solution to the problem is based on the solutions from the subproblems. x = {25.74000969, -15.54000969}

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