X^2+(2X-3)=225

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Solution for X^2+(2X-3)=225 equation:


Simplifying
X2 + (2X + -3) = 225

Reorder the terms:
X2 + (-3 + 2X) = 225

Remove parenthesis around (-3 + 2X)
X2 + -3 + 2X = 225

Reorder the terms:
-3 + 2X + X2 = 225

Solving
-3 + 2X + X2 = 225

Solving for variable 'X'.

Reorder the terms:
-3 + -225 + 2X + X2 = 225 + -225

Combine like terms: -3 + -225 = -228
-228 + 2X + X2 = 225 + -225

Combine like terms: 225 + -225 = 0
-228 + 2X + X2 = 0

Begin completing the square.

Move the constant term to the right:

Add '228' to each side of the equation.
-228 + 2X + 228 + X2 = 0 + 228

Reorder the terms:
-228 + 228 + 2X + X2 = 0 + 228

Combine like terms: -228 + 228 = 0
0 + 2X + X2 = 0 + 228
2X + X2 = 0 + 228

Combine like terms: 0 + 228 = 228
2X + X2 = 228

The X term is 2X.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2X + 1 + X2 = 228 + 1

Reorder the terms:
1 + 2X + X2 = 228 + 1

Combine like terms: 228 + 1 = 229
1 + 2X + X2 = 229

Factor a perfect square on the left side:
(X + 1)(X + 1) = 229

Calculate the square root of the right side: 15.13274595

Break this problem into two subproblems by setting 
(X + 1) equal to 15.13274595 and -15.13274595.

Subproblem 1

X + 1 = 15.13274595 Simplifying X + 1 = 15.13274595 Reorder the terms: 1 + X = 15.13274595 Solving 1 + X = 15.13274595 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + X = 15.13274595 + -1 Combine like terms: 1 + -1 = 0 0 + X = 15.13274595 + -1 X = 15.13274595 + -1 Combine like terms: 15.13274595 + -1 = 14.13274595 X = 14.13274595 Simplifying X = 14.13274595

Subproblem 2

X + 1 = -15.13274595 Simplifying X + 1 = -15.13274595 Reorder the terms: 1 + X = -15.13274595 Solving 1 + X = -15.13274595 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + X = -15.13274595 + -1 Combine like terms: 1 + -1 = 0 0 + X = -15.13274595 + -1 X = -15.13274595 + -1 Combine like terms: -15.13274595 + -1 = -16.13274595 X = -16.13274595 Simplifying X = -16.13274595

Solution

The solution to the problem is based on the solutions from the subproblems. X = {14.13274595, -16.13274595}

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