2x^2+10x-875=0

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Solution for 2x^2+10x-875=0 equation:


Simplifying
2x2 + 10x + -875 = 0

Reorder the terms:
-875 + 10x + 2x2 = 0

Solving
-875 + 10x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
-437.5 + 5x + x2 = 0

Move the constant term to the right:

Add '437.5' to each side of the equation.
-437.5 + 5x + 437.5 + x2 = 0 + 437.5

Reorder the terms:
-437.5 + 437.5 + 5x + x2 = 0 + 437.5

Combine like terms: -437.5 + 437.5 = 0.0
0.0 + 5x + x2 = 0 + 437.5
5x + x2 = 0 + 437.5

Combine like terms: 0 + 437.5 = 437.5
5x + x2 = 437.5

The x term is 5x.  Take half its coefficient (2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
5x + 6.25 + x2 = 437.5 + 6.25

Reorder the terms:
6.25 + 5x + x2 = 437.5 + 6.25

Combine like terms: 437.5 + 6.25 = 443.75
6.25 + 5x + x2 = 443.75

Factor a perfect square on the left side:
(x + 2.5)(x + 2.5) = 443.75

Calculate the square root of the right side: 21.065374433

Break this problem into two subproblems by setting 
(x + 2.5) equal to 21.065374433 and -21.065374433.

Subproblem 1

x + 2.5 = 21.065374433 Simplifying x + 2.5 = 21.065374433 Reorder the terms: 2.5 + x = 21.065374433 Solving 2.5 + x = 21.065374433 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + x = 21.065374433 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = 21.065374433 + -2.5 x = 21.065374433 + -2.5 Combine like terms: 21.065374433 + -2.5 = 18.565374433 x = 18.565374433 Simplifying x = 18.565374433

Subproblem 2

x + 2.5 = -21.065374433 Simplifying x + 2.5 = -21.065374433 Reorder the terms: 2.5 + x = -21.065374433 Solving 2.5 + x = -21.065374433 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + x = -21.065374433 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = -21.065374433 + -2.5 x = -21.065374433 + -2.5 Combine like terms: -21.065374433 + -2.5 = -23.565374433 x = -23.565374433 Simplifying x = -23.565374433

Solution

The solution to the problem is based on the solutions from the subproblems. x = {18.565374433, -23.565374433}

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