x^2-7x-750=0

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Solution for x^2-7x-750=0 equation:


Simplifying
x2 + -7x + -750 = 0

Reorder the terms:
-750 + -7x + x2 = 0

Solving
-750 + -7x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '750' to each side of the equation.
-750 + -7x + 750 + x2 = 0 + 750

Reorder the terms:
-750 + 750 + -7x + x2 = 0 + 750

Combine like terms: -750 + 750 = 0
0 + -7x + x2 = 0 + 750
-7x + x2 = 0 + 750

Combine like terms: 0 + 750 = 750
-7x + x2 = 750

The x term is -7x.  Take half its coefficient (-3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
-7x + 12.25 + x2 = 750 + 12.25

Reorder the terms:
12.25 + -7x + x2 = 750 + 12.25

Combine like terms: 750 + 12.25 = 762.25
12.25 + -7x + x2 = 762.25

Factor a perfect square on the left side:
(x + -3.5)(x + -3.5) = 762.25

Calculate the square root of the right side: 27.608875385

Break this problem into two subproblems by setting 
(x + -3.5) equal to 27.608875385 and -27.608875385.

Subproblem 1

x + -3.5 = 27.608875385 Simplifying x + -3.5 = 27.608875385 Reorder the terms: -3.5 + x = 27.608875385 Solving -3.5 + x = 27.608875385 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + x = 27.608875385 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + x = 27.608875385 + 3.5 x = 27.608875385 + 3.5 Combine like terms: 27.608875385 + 3.5 = 31.108875385 x = 31.108875385 Simplifying x = 31.108875385

Subproblem 2

x + -3.5 = -27.608875385 Simplifying x + -3.5 = -27.608875385 Reorder the terms: -3.5 + x = -27.608875385 Solving -3.5 + x = -27.608875385 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + x = -27.608875385 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + x = -27.608875385 + 3.5 x = -27.608875385 + 3.5 Combine like terms: -27.608875385 + 3.5 = -24.108875385 x = -24.108875385 Simplifying x = -24.108875385

Solution

The solution to the problem is based on the solutions from the subproblems. x = {31.108875385, -24.108875385}

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