3(x^2-14x)=-14

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Solution for 3(x^2-14x)=-14 equation:


Simplifying
3(x2 + -14x) = -14

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

Solving
-42x + 3x2 = -14

Solving for variable 'x'.

Reorder the terms:
14 + -42x + 3x2 = -14 + 14

Combine like terms: -14 + 14 = 0
14 + -42x + 3x2 = 0

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

Divide each side by '3'.
4.666666667 + -14x + x2 = 0

Move the constant term to the right:

Add '-4.666666667' to each side of the equation.
4.666666667 + -14x + -4.666666667 + x2 = 0 + -4.666666667

Reorder the terms:
4.666666667 + -4.666666667 + -14x + x2 = 0 + -4.666666667

Combine like terms: 4.666666667 + -4.666666667 = 0.000000000
0.000000000 + -14x + x2 = 0 + -4.666666667
-14x + x2 = 0 + -4.666666667

Combine like terms: 0 + -4.666666667 = -4.666666667
-14x + x2 = -4.666666667

The x term is -14x.  Take half its coefficient (-7).
Square it (49) and add it to both sides.

Add '49' to each side of the equation.
-14x + 49 + x2 = -4.666666667 + 49

Reorder the terms:
49 + -14x + x2 = -4.666666667 + 49

Combine like terms: -4.666666667 + 49 = 44.333333333
49 + -14x + x2 = 44.333333333

Factor a perfect square on the left side:
(x + -7)(x + -7) = 44.333333333

Calculate the square root of the right side: 6.658328118

Break this problem into two subproblems by setting 
(x + -7) equal to 6.658328118 and -6.658328118.

Subproblem 1

x + -7 = 6.658328118 Simplifying x + -7 = 6.658328118 Reorder the terms: -7 + x = 6.658328118 Solving -7 + x = 6.658328118 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + x = 6.658328118 + 7 Combine like terms: -7 + 7 = 0 0 + x = 6.658328118 + 7 x = 6.658328118 + 7 Combine like terms: 6.658328118 + 7 = 13.658328118 x = 13.658328118 Simplifying x = 13.658328118

Subproblem 2

x + -7 = -6.658328118 Simplifying x + -7 = -6.658328118 Reorder the terms: -7 + x = -6.658328118 Solving -7 + x = -6.658328118 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + x = -6.658328118 + 7 Combine like terms: -7 + 7 = 0 0 + x = -6.658328118 + 7 x = -6.658328118 + 7 Combine like terms: -6.658328118 + 7 = 0.341671882 x = 0.341671882 Simplifying x = 0.341671882

Solution

The solution to the problem is based on the solutions from the subproblems. x = {13.658328118, 0.341671882}

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