27x^2-70=4x

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Solution for 27x^2-70=4x equation:


Simplifying
27x2 + -70 = 4x

Reorder the terms:
-70 + 27x2 = 4x

Solving
-70 + 27x2 = 4x

Solving for variable 'x'.

Reorder the terms:
-70 + -4x + 27x2 = 4x + -4x

Combine like terms: 4x + -4x = 0
-70 + -4x + 27x2 = 0

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

Divide each side by '27'.
-2.592592593 + -0.1481481481x + x2 = 0

Move the constant term to the right:

Add '2.592592593' to each side of the equation.
-2.592592593 + -0.1481481481x + 2.592592593 + x2 = 0 + 2.592592593

Reorder the terms:
-2.592592593 + 2.592592593 + -0.1481481481x + x2 = 0 + 2.592592593

Combine like terms: -2.592592593 + 2.592592593 = 0.000000000
0.000000000 + -0.1481481481x + x2 = 0 + 2.592592593
-0.1481481481x + x2 = 0 + 2.592592593

Combine like terms: 0 + 2.592592593 = 2.592592593
-0.1481481481x + x2 = 2.592592593

The x term is -0.1481481481x.  Take half its coefficient (-0.07407407405).
Square it (0.005486968446) and add it to both sides.

Add '0.005486968446' to each side of the equation.
-0.1481481481x + 0.005486968446 + x2 = 2.592592593 + 0.005486968446

Reorder the terms:
0.005486968446 + -0.1481481481x + x2 = 2.592592593 + 0.005486968446

Combine like terms: 2.592592593 + 0.005486968446 = 2.598079561446
0.005486968446 + -0.1481481481x + x2 = 2.598079561446

Factor a perfect square on the left side:
(x + -0.07407407405)(x + -0.07407407405) = 2.598079561446

Calculate the square root of the right side: 1.611855937

Break this problem into two subproblems by setting 
(x + -0.07407407405) equal to 1.611855937 and -1.611855937.

Subproblem 1

x + -0.07407407405 = 1.611855937 Simplifying x + -0.07407407405 = 1.611855937 Reorder the terms: -0.07407407405 + x = 1.611855937 Solving -0.07407407405 + x = 1.611855937 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.07407407405' to each side of the equation. -0.07407407405 + 0.07407407405 + x = 1.611855937 + 0.07407407405 Combine like terms: -0.07407407405 + 0.07407407405 = 0.00000000000 0.00000000000 + x = 1.611855937 + 0.07407407405 x = 1.611855937 + 0.07407407405 Combine like terms: 1.611855937 + 0.07407407405 = 1.68593001105 x = 1.68593001105 Simplifying x = 1.68593001105

Subproblem 2

x + -0.07407407405 = -1.611855937 Simplifying x + -0.07407407405 = -1.611855937 Reorder the terms: -0.07407407405 + x = -1.611855937 Solving -0.07407407405 + x = -1.611855937 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.07407407405' to each side of the equation. -0.07407407405 + 0.07407407405 + x = -1.611855937 + 0.07407407405 Combine like terms: -0.07407407405 + 0.07407407405 = 0.00000000000 0.00000000000 + x = -1.611855937 + 0.07407407405 x = -1.611855937 + 0.07407407405 Combine like terms: -1.611855937 + 0.07407407405 = -1.53778186295 x = -1.53778186295 Simplifying x = -1.53778186295

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.68593001105, -1.53778186295}

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