X^2+2X-35.25=0

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Solution for X^2+2X-35.25=0 equation:


Simplifying
X2 + 2X + -35.25 = 0

Reorder the terms:
-35.25 + 2X + X2 = 0

Solving
-35.25 + 2X + X2 = 0

Solving for variable 'X'.

Begin completing the square.

Move the constant term to the right:

Add '35.25' to each side of the equation.
-35.25 + 2X + 35.25 + X2 = 0 + 35.25

Reorder the terms:
-35.25 + 35.25 + 2X + X2 = 0 + 35.25

Combine like terms: -35.25 + 35.25 = 0.00
0.00 + 2X + X2 = 0 + 35.25
2X + X2 = 0 + 35.25

Combine like terms: 0 + 35.25 = 35.25
2X + X2 = 35.25

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 = 35.25 + 1

Reorder the terms:
1 + 2X + X2 = 35.25 + 1

Combine like terms: 35.25 + 1 = 36.25
1 + 2X + X2 = 36.25

Factor a perfect square on the left side:
(X + 1)(X + 1) = 36.25

Calculate the square root of the right side: 6.020797289

Break this problem into two subproblems by setting 
(X + 1) equal to 6.020797289 and -6.020797289.

Subproblem 1

X + 1 = 6.020797289 Simplifying X + 1 = 6.020797289 Reorder the terms: 1 + X = 6.020797289 Solving 1 + X = 6.020797289 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 = 6.020797289 + -1 Combine like terms: 1 + -1 = 0 0 + X = 6.020797289 + -1 X = 6.020797289 + -1 Combine like terms: 6.020797289 + -1 = 5.020797289 X = 5.020797289 Simplifying X = 5.020797289

Subproblem 2

X + 1 = -6.020797289 Simplifying X + 1 = -6.020797289 Reorder the terms: 1 + X = -6.020797289 Solving 1 + X = -6.020797289 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 = -6.020797289 + -1 Combine like terms: 1 + -1 = 0 0 + X = -6.020797289 + -1 X = -6.020797289 + -1 Combine like terms: -6.020797289 + -1 = -7.020797289 X = -7.020797289 Simplifying X = -7.020797289

Solution

The solution to the problem is based on the solutions from the subproblems. X = {5.020797289, -7.020797289}

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