14x(10x+7)=93

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Solution for 14x(10x+7)=93 equation:


Simplifying
14x(10x + 7) = 93

Reorder the terms:
14x(7 + 10x) = 93
(7 * 14x + 10x * 14x) = 93
(98x + 140x2) = 93

Solving
98x + 140x2 = 93

Solving for variable 'x'.

Reorder the terms:
-93 + 98x + 140x2 = 93 + -93

Combine like terms: 93 + -93 = 0
-93 + 98x + 140x2 = 0

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

Divide each side by '140'.
-0.6642857143 + 0.7x + x2 = 0.0

Move the constant term to the right:

Add '0.6642857143' to each side of the equation.
-0.6642857143 + 0.7x + 0.6642857143 + x2 = 0.0 + 0.6642857143

Reorder the terms:
-0.6642857143 + 0.6642857143 + 0.7x + x2 = 0.0 + 0.6642857143

Combine like terms: -0.6642857143 + 0.6642857143 = 0.0000000000
0.0000000000 + 0.7x + x2 = 0.0 + 0.6642857143
0.7x + x2 = 0.0 + 0.6642857143

Combine like terms: 0.0 + 0.6642857143 = 0.6642857143
0.7x + x2 = 0.6642857143

The x term is 0.7x.  Take half its coefficient (0.35).
Square it (0.1225) and add it to both sides.

Add '0.1225' to each side of the equation.
0.7x + 0.1225 + x2 = 0.6642857143 + 0.1225

Reorder the terms:
0.1225 + 0.7x + x2 = 0.6642857143 + 0.1225

Combine like terms: 0.6642857143 + 0.1225 = 0.7867857143
0.1225 + 0.7x + x2 = 0.7867857143

Factor a perfect square on the left side:
(x + 0.35)(x + 0.35) = 0.7867857143

Calculate the square root of the right side: 0.887009422

Break this problem into two subproblems by setting 
(x + 0.35) equal to 0.887009422 and -0.887009422.

Subproblem 1

x + 0.35 = 0.887009422 Simplifying x + 0.35 = 0.887009422 Reorder the terms: 0.35 + x = 0.887009422 Solving 0.35 + x = 0.887009422 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.35' to each side of the equation. 0.35 + -0.35 + x = 0.887009422 + -0.35 Combine like terms: 0.35 + -0.35 = 0.00 0.00 + x = 0.887009422 + -0.35 x = 0.887009422 + -0.35 Combine like terms: 0.887009422 + -0.35 = 0.537009422 x = 0.537009422 Simplifying x = 0.537009422

Subproblem 2

x + 0.35 = -0.887009422 Simplifying x + 0.35 = -0.887009422 Reorder the terms: 0.35 + x = -0.887009422 Solving 0.35 + x = -0.887009422 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.35' to each side of the equation. 0.35 + -0.35 + x = -0.887009422 + -0.35 Combine like terms: 0.35 + -0.35 = 0.00 0.00 + x = -0.887009422 + -0.35 x = -0.887009422 + -0.35 Combine like terms: -0.887009422 + -0.35 = -1.237009422 x = -1.237009422 Simplifying x = -1.237009422

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.537009422, -1.237009422}

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