14x(10x-3)=17

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Solution for 14x(10x-3)=17 equation:


Simplifying
14x(10x + -3) = 17

Reorder the terms:
14x(-3 + 10x) = 17
(-3 * 14x + 10x * 14x) = 17
(-42x + 140x2) = 17

Solving
-42x + 140x2 = 17

Solving for variable 'x'.

Reorder the terms:
-17 + -42x + 140x2 = 17 + -17

Combine like terms: 17 + -17 = 0
-17 + -42x + 140x2 = 0

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

Divide each side by '140'.
-0.1214285714 + -0.3x + x2 = 0.0

Move the constant term to the right:

Add '0.1214285714' to each side of the equation.
-0.1214285714 + -0.3x + 0.1214285714 + x2 = 0.0 + 0.1214285714

Reorder the terms:
-0.1214285714 + 0.1214285714 + -0.3x + x2 = 0.0 + 0.1214285714

Combine like terms: -0.1214285714 + 0.1214285714 = 0.0000000000
0.0000000000 + -0.3x + x2 = 0.0 + 0.1214285714
-0.3x + x2 = 0.0 + 0.1214285714

Combine like terms: 0.0 + 0.1214285714 = 0.1214285714
-0.3x + x2 = 0.1214285714

The x term is -0.3x.  Take half its coefficient (-0.15).
Square it (0.0225) and add it to both sides.

Add '0.0225' to each side of the equation.
-0.3x + 0.0225 + x2 = 0.1214285714 + 0.0225

Reorder the terms:
0.0225 + -0.3x + x2 = 0.1214285714 + 0.0225

Combine like terms: 0.1214285714 + 0.0225 = 0.1439285714
0.0225 + -0.3x + x2 = 0.1439285714

Factor a perfect square on the left side:
(x + -0.15)(x + -0.15) = 0.1439285714

Calculate the square root of the right side: 0.379379192

Break this problem into two subproblems by setting 
(x + -0.15) equal to 0.379379192 and -0.379379192.

Subproblem 1

x + -0.15 = 0.379379192 Simplifying x + -0.15 = 0.379379192 Reorder the terms: -0.15 + x = 0.379379192 Solving -0.15 + x = 0.379379192 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.15' to each side of the equation. -0.15 + 0.15 + x = 0.379379192 + 0.15 Combine like terms: -0.15 + 0.15 = 0.00 0.00 + x = 0.379379192 + 0.15 x = 0.379379192 + 0.15 Combine like terms: 0.379379192 + 0.15 = 0.529379192 x = 0.529379192 Simplifying x = 0.529379192

Subproblem 2

x + -0.15 = -0.379379192 Simplifying x + -0.15 = -0.379379192 Reorder the terms: -0.15 + x = -0.379379192 Solving -0.15 + x = -0.379379192 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.15' to each side of the equation. -0.15 + 0.15 + x = -0.379379192 + 0.15 Combine like terms: -0.15 + 0.15 = 0.00 0.00 + x = -0.379379192 + 0.15 x = -0.379379192 + 0.15 Combine like terms: -0.379379192 + 0.15 = -0.229379192 x = -0.229379192 Simplifying x = -0.229379192

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.529379192, -0.229379192}

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