-4(-2x-7)6x-7=

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Solution for -4(-2x-7)6x-7= equation:


Simplifying
-4(-2x + -7) * 6x + -7 = 0

Reorder the terms:
-4(-7 + -2x) * 6x + -7 = 0

Reorder the terms for easier multiplication:
-4 * 6x(-7 + -2x) + -7 = 0

Multiply -4 * 6
-24x(-7 + -2x) + -7 = 0
(-7 * -24x + -2x * -24x) + -7 = 0
(168x + 48x2) + -7 = 0

Reorder the terms:
-7 + 168x + 48x2 = 0

Solving
-7 + 168x + 48x2 = 0

Solving for variable 'x'.

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

Divide each side by '48'.
-0.1458333333 + 3.5x + x2 = 0

Move the constant term to the right:

Add '0.1458333333' to each side of the equation.
-0.1458333333 + 3.5x + 0.1458333333 + x2 = 0 + 0.1458333333

Reorder the terms:
-0.1458333333 + 0.1458333333 + 3.5x + x2 = 0 + 0.1458333333

Combine like terms: -0.1458333333 + 0.1458333333 = 0.0000000000
0.0000000000 + 3.5x + x2 = 0 + 0.1458333333
3.5x + x2 = 0 + 0.1458333333

Combine like terms: 0 + 0.1458333333 = 0.1458333333
3.5x + x2 = 0.1458333333

The x term is 3.5x.  Take half its coefficient (1.75).
Square it (3.0625) and add it to both sides.

Add '3.0625' to each side of the equation.
3.5x + 3.0625 + x2 = 0.1458333333 + 3.0625

Reorder the terms:
3.0625 + 3.5x + x2 = 0.1458333333 + 3.0625

Combine like terms: 0.1458333333 + 3.0625 = 3.2083333333
3.0625 + 3.5x + x2 = 3.2083333333

Factor a perfect square on the left side:
(x + 1.75)(x + 1.75) = 3.2083333333

Calculate the square root of the right side: 1.791182105

Break this problem into two subproblems by setting 
(x + 1.75) equal to 1.791182105 and -1.791182105.

Subproblem 1

x + 1.75 = 1.791182105 Simplifying x + 1.75 = 1.791182105 Reorder the terms: 1.75 + x = 1.791182105 Solving 1.75 + x = 1.791182105 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.75' to each side of the equation. 1.75 + -1.75 + x = 1.791182105 + -1.75 Combine like terms: 1.75 + -1.75 = 0.00 0.00 + x = 1.791182105 + -1.75 x = 1.791182105 + -1.75 Combine like terms: 1.791182105 + -1.75 = 0.041182105 x = 0.041182105 Simplifying x = 0.041182105

Subproblem 2

x + 1.75 = -1.791182105 Simplifying x + 1.75 = -1.791182105 Reorder the terms: 1.75 + x = -1.791182105 Solving 1.75 + x = -1.791182105 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.75' to each side of the equation. 1.75 + -1.75 + x = -1.791182105 + -1.75 Combine like terms: 1.75 + -1.75 = 0.00 0.00 + x = -1.791182105 + -1.75 x = -1.791182105 + -1.75 Combine like terms: -1.791182105 + -1.75 = -3.541182105 x = -3.541182105 Simplifying x = -3.541182105

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.041182105, -3.541182105}

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