2X^2-5X=37

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Solution for 2X^2-5X=37 equation:


Simplifying
2X2 + -5X = 37

Reorder the terms:
-5X + 2X2 = 37

Solving
-5X + 2X2 = 37

Solving for variable 'X'.

Reorder the terms:
-37 + -5X + 2X2 = 37 + -37

Combine like terms: 37 + -37 = 0
-37 + -5X + 2X2 = 0

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

Divide each side by '2'.
-18.5 + -2.5X + X2 = 0

Move the constant term to the right:

Add '18.5' to each side of the equation.
-18.5 + -2.5X + 18.5 + X2 = 0 + 18.5

Reorder the terms:
-18.5 + 18.5 + -2.5X + X2 = 0 + 18.5

Combine like terms: -18.5 + 18.5 = 0.0
0.0 + -2.5X + X2 = 0 + 18.5
-2.5X + X2 = 0 + 18.5

Combine like terms: 0 + 18.5 = 18.5
-2.5X + X2 = 18.5

The X term is -2.5X.  Take half its coefficient (-1.25).
Square it (1.5625) and add it to both sides.

Add '1.5625' to each side of the equation.
-2.5X + 1.5625 + X2 = 18.5 + 1.5625

Reorder the terms:
1.5625 + -2.5X + X2 = 18.5 + 1.5625

Combine like terms: 18.5 + 1.5625 = 20.0625
1.5625 + -2.5X + X2 = 20.0625

Factor a perfect square on the left side:
(X + -1.25)(X + -1.25) = 20.0625

Calculate the square root of the right side: 4.479118217

Break this problem into two subproblems by setting 
(X + -1.25) equal to 4.479118217 and -4.479118217.

Subproblem 1

X + -1.25 = 4.479118217 Simplifying X + -1.25 = 4.479118217 Reorder the terms: -1.25 + X = 4.479118217 Solving -1.25 + X = 4.479118217 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + X = 4.479118217 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + X = 4.479118217 + 1.25 X = 4.479118217 + 1.25 Combine like terms: 4.479118217 + 1.25 = 5.729118217 X = 5.729118217 Simplifying X = 5.729118217

Subproblem 2

X + -1.25 = -4.479118217 Simplifying X + -1.25 = -4.479118217 Reorder the terms: -1.25 + X = -4.479118217 Solving -1.25 + X = -4.479118217 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + X = -4.479118217 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + X = -4.479118217 + 1.25 X = -4.479118217 + 1.25 Combine like terms: -4.479118217 + 1.25 = -3.229118217 X = -3.229118217 Simplifying X = -3.229118217

Solution

The solution to the problem is based on the solutions from the subproblems. X = {5.729118217, -3.229118217}

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