2x^2-3x-35=345

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Solution for 2x^2-3x-35=345 equation:


Simplifying
2x2 + -3x + -35 = 345

Reorder the terms:
-35 + -3x + 2x2 = 345

Solving
-35 + -3x + 2x2 = 345

Solving for variable 'x'.

Reorder the terms:
-35 + -345 + -3x + 2x2 = 345 + -345

Combine like terms: -35 + -345 = -380
-380 + -3x + 2x2 = 345 + -345

Combine like terms: 345 + -345 = 0
-380 + -3x + 2x2 = 0

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

Divide each side by '2'.
-190 + -1.5x + x2 = 0

Move the constant term to the right:

Add '190' to each side of the equation.
-190 + -1.5x + 190 + x2 = 0 + 190

Reorder the terms:
-190 + 190 + -1.5x + x2 = 0 + 190

Combine like terms: -190 + 190 = 0
0 + -1.5x + x2 = 0 + 190
-1.5x + x2 = 0 + 190

Combine like terms: 0 + 190 = 190
-1.5x + x2 = 190

The x term is -1.5x.  Take half its coefficient (-0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
-1.5x + 0.5625 + x2 = 190 + 0.5625

Reorder the terms:
0.5625 + -1.5x + x2 = 190 + 0.5625

Combine like terms: 190 + 0.5625 = 190.5625
0.5625 + -1.5x + x2 = 190.5625

Factor a perfect square on the left side:
(x + -0.75)(x + -0.75) = 190.5625

Calculate the square root of the right side: 13.804437692

Break this problem into two subproblems by setting 
(x + -0.75) equal to 13.804437692 and -13.804437692.

Subproblem 1

x + -0.75 = 13.804437692 Simplifying x + -0.75 = 13.804437692 Reorder the terms: -0.75 + x = 13.804437692 Solving -0.75 + x = 13.804437692 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = 13.804437692 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = 13.804437692 + 0.75 x = 13.804437692 + 0.75 Combine like terms: 13.804437692 + 0.75 = 14.554437692 x = 14.554437692 Simplifying x = 14.554437692

Subproblem 2

x + -0.75 = -13.804437692 Simplifying x + -0.75 = -13.804437692 Reorder the terms: -0.75 + x = -13.804437692 Solving -0.75 + x = -13.804437692 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = -13.804437692 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = -13.804437692 + 0.75 x = -13.804437692 + 0.75 Combine like terms: -13.804437692 + 0.75 = -13.054437692 x = -13.054437692 Simplifying x = -13.054437692

Solution

The solution to the problem is based on the solutions from the subproblems. x = {14.554437692, -13.054437692}

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