-11x^2-5x+70=0

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Solution for -11x^2-5x+70=0 equation:


Simplifying
-11x2 + -5x + 70 = 0

Reorder the terms:
70 + -5x + -11x2 = 0

Solving
70 + -5x + -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'.
-6.363636364 + 0.4545454545x + x2 = 0

Move the constant term to the right:

Add '6.363636364' to each side of the equation.
-6.363636364 + 0.4545454545x + 6.363636364 + x2 = 0 + 6.363636364

Reorder the terms:
-6.363636364 + 6.363636364 + 0.4545454545x + x2 = 0 + 6.363636364

Combine like terms: -6.363636364 + 6.363636364 = 0.000000000
0.000000000 + 0.4545454545x + x2 = 0 + 6.363636364
0.4545454545x + x2 = 0 + 6.363636364

Combine like terms: 0 + 6.363636364 = 6.363636364
0.4545454545x + x2 = 6.363636364

The x term is 0.4545454545x.  Take half its coefficient (0.2272727273).
Square it (0.05165289257) and add it to both sides.

Add '0.05165289257' to each side of the equation.
0.4545454545x + 0.05165289257 + x2 = 6.363636364 + 0.05165289257

Reorder the terms:
0.05165289257 + 0.4545454545x + x2 = 6.363636364 + 0.05165289257

Combine like terms: 6.363636364 + 0.05165289257 = 6.41528925657
0.05165289257 + 0.4545454545x + x2 = 6.41528925657

Factor a perfect square on the left side:
(x + 0.2272727273)(x + 0.2272727273) = 6.41528925657

Calculate the square root of the right side: 2.53284213

Break this problem into two subproblems by setting 
(x + 0.2272727273) equal to 2.53284213 and -2.53284213.

Subproblem 1

x + 0.2272727273 = 2.53284213 Simplifying x + 0.2272727273 = 2.53284213 Reorder the terms: 0.2272727273 + x = 2.53284213 Solving 0.2272727273 + x = 2.53284213 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2272727273' to each side of the equation. 0.2272727273 + -0.2272727273 + x = 2.53284213 + -0.2272727273 Combine like terms: 0.2272727273 + -0.2272727273 = 0.0000000000 0.0000000000 + x = 2.53284213 + -0.2272727273 x = 2.53284213 + -0.2272727273 Combine like terms: 2.53284213 + -0.2272727273 = 2.3055694027 x = 2.3055694027 Simplifying x = 2.3055694027

Subproblem 2

x + 0.2272727273 = -2.53284213 Simplifying x + 0.2272727273 = -2.53284213 Reorder the terms: 0.2272727273 + x = -2.53284213 Solving 0.2272727273 + x = -2.53284213 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2272727273' to each side of the equation. 0.2272727273 + -0.2272727273 + x = -2.53284213 + -0.2272727273 Combine like terms: 0.2272727273 + -0.2272727273 = 0.0000000000 0.0000000000 + x = -2.53284213 + -0.2272727273 x = -2.53284213 + -0.2272727273 Combine like terms: -2.53284213 + -0.2272727273 = -2.7601148573 x = -2.7601148573 Simplifying x = -2.7601148573

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.3055694027, -2.7601148573}

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