11x^2+14x-5=0

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Solution for 11x^2+14x-5=0 equation:


Simplifying
11x2 + 14x + -5 = 0

Reorder the terms:
-5 + 14x + 11x2 = 0

Solving
-5 + 14x + 11x2 = 0

Solving for variable 'x'.

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

Divide each side by '11'.
-0.4545454545 + 1.272727273x + x2 = 0

Move the constant term to the right:

Add '0.4545454545' to each side of the equation.
-0.4545454545 + 1.272727273x + 0.4545454545 + x2 = 0 + 0.4545454545

Reorder the terms:
-0.4545454545 + 0.4545454545 + 1.272727273x + x2 = 0 + 0.4545454545

Combine like terms: -0.4545454545 + 0.4545454545 = 0.0000000000
0.0000000000 + 1.272727273x + x2 = 0 + 0.4545454545
1.272727273x + x2 = 0 + 0.4545454545

Combine like terms: 0 + 0.4545454545 = 0.4545454545
1.272727273x + x2 = 0.4545454545

The x term is 1.272727273x.  Take half its coefficient (0.6363636365).
Square it (0.4049586779) and add it to both sides.

Add '0.4049586779' to each side of the equation.
1.272727273x + 0.4049586779 + x2 = 0.4545454545 + 0.4049586779

Reorder the terms:
0.4049586779 + 1.272727273x + x2 = 0.4545454545 + 0.4049586779

Combine like terms: 0.4545454545 + 0.4049586779 = 0.8595041324
0.4049586779 + 1.272727273x + x2 = 0.8595041324

Factor a perfect square on the left side:
(x + 0.6363636365)(x + 0.6363636365) = 0.8595041324

Calculate the square root of the right side: 0.927094457

Break this problem into two subproblems by setting 
(x + 0.6363636365) equal to 0.927094457 and -0.927094457.

Subproblem 1

x + 0.6363636365 = 0.927094457 Simplifying x + 0.6363636365 = 0.927094457 Reorder the terms: 0.6363636365 + x = 0.927094457 Solving 0.6363636365 + x = 0.927094457 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.6363636365' to each side of the equation. 0.6363636365 + -0.6363636365 + x = 0.927094457 + -0.6363636365 Combine like terms: 0.6363636365 + -0.6363636365 = 0.0000000000 0.0000000000 + x = 0.927094457 + -0.6363636365 x = 0.927094457 + -0.6363636365 Combine like terms: 0.927094457 + -0.6363636365 = 0.2907308205 x = 0.2907308205 Simplifying x = 0.2907308205

Subproblem 2

x + 0.6363636365 = -0.927094457 Simplifying x + 0.6363636365 = -0.927094457 Reorder the terms: 0.6363636365 + x = -0.927094457 Solving 0.6363636365 + x = -0.927094457 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.6363636365' to each side of the equation. 0.6363636365 + -0.6363636365 + x = -0.927094457 + -0.6363636365 Combine like terms: 0.6363636365 + -0.6363636365 = 0.0000000000 0.0000000000 + x = -0.927094457 + -0.6363636365 x = -0.927094457 + -0.6363636365 Combine like terms: -0.927094457 + -0.6363636365 = -1.5634580935 x = -1.5634580935 Simplifying x = -1.5634580935

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.2907308205, -1.5634580935}

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