2X^2+9X-34=0

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Solution for 2X^2+9X-34=0 equation:


Simplifying
2X2 + 9X + -34 = 0

Reorder the terms:
-34 + 9X + 2X2 = 0

Solving
-34 + 9X + 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'.
-17 + 4.5X + X2 = 0

Move the constant term to the right:

Add '17' to each side of the equation.
-17 + 4.5X + 17 + X2 = 0 + 17

Reorder the terms:
-17 + 17 + 4.5X + X2 = 0 + 17

Combine like terms: -17 + 17 = 0
0 + 4.5X + X2 = 0 + 17
4.5X + X2 = 0 + 17

Combine like terms: 0 + 17 = 17
4.5X + X2 = 17

The X term is 4.5X.  Take half its coefficient (2.25).
Square it (5.0625) and add it to both sides.

Add '5.0625' to each side of the equation.
4.5X + 5.0625 + X2 = 17 + 5.0625

Reorder the terms:
5.0625 + 4.5X + X2 = 17 + 5.0625

Combine like terms: 17 + 5.0625 = 22.0625
5.0625 + 4.5X + X2 = 22.0625

Factor a perfect square on the left side:
(X + 2.25)(X + 2.25) = 22.0625

Calculate the square root of the right side: 4.697073557

Break this problem into two subproblems by setting 
(X + 2.25) equal to 4.697073557 and -4.697073557.

Subproblem 1

X + 2.25 = 4.697073557 Simplifying X + 2.25 = 4.697073557 Reorder the terms: 2.25 + X = 4.697073557 Solving 2.25 + X = 4.697073557 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-2.25' to each side of the equation. 2.25 + -2.25 + X = 4.697073557 + -2.25 Combine like terms: 2.25 + -2.25 = 0.00 0.00 + X = 4.697073557 + -2.25 X = 4.697073557 + -2.25 Combine like terms: 4.697073557 + -2.25 = 2.447073557 X = 2.447073557 Simplifying X = 2.447073557

Subproblem 2

X + 2.25 = -4.697073557 Simplifying X + 2.25 = -4.697073557 Reorder the terms: 2.25 + X = -4.697073557 Solving 2.25 + X = -4.697073557 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-2.25' to each side of the equation. 2.25 + -2.25 + X = -4.697073557 + -2.25 Combine like terms: 2.25 + -2.25 = 0.00 0.00 + X = -4.697073557 + -2.25 X = -4.697073557 + -2.25 Combine like terms: -4.697073557 + -2.25 = -6.947073557 X = -6.947073557 Simplifying X = -6.947073557

Solution

The solution to the problem is based on the solutions from the subproblems. X = {2.447073557, -6.947073557}

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