-(14x*4)+7x^2=160

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Solution for -(14x*4)+7x^2=160 equation:


Simplifying
-1(14x * 4) + 7x2 = 160

Reorder the terms for easier multiplication:
-1(14 * 4x) + 7x2 = 160

Multiply 14 * 4
-1(56x) + 7x2 = 160

Remove parenthesis around (56x)
-1 * 56x + 7x2 = 160

Multiply -1 * 56
-56x + 7x2 = 160

Solving
-56x + 7x2 = 160

Solving for variable 'x'.

Reorder the terms:
-160 + -56x + 7x2 = 160 + -160

Combine like terms: 160 + -160 = 0
-160 + -56x + 7x2 = 0

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

Divide each side by '7'.
-22.85714286 + -8x + x2 = 0

Move the constant term to the right:

Add '22.85714286' to each side of the equation.
-22.85714286 + -8x + 22.85714286 + x2 = 0 + 22.85714286

Reorder the terms:
-22.85714286 + 22.85714286 + -8x + x2 = 0 + 22.85714286

Combine like terms: -22.85714286 + 22.85714286 = 0.00000000
0.00000000 + -8x + x2 = 0 + 22.85714286
-8x + x2 = 0 + 22.85714286

Combine like terms: 0 + 22.85714286 = 22.85714286
-8x + x2 = 22.85714286

The x term is -8x.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8x + 16 + x2 = 22.85714286 + 16

Reorder the terms:
16 + -8x + x2 = 22.85714286 + 16

Combine like terms: 22.85714286 + 16 = 38.85714286
16 + -8x + x2 = 38.85714286

Factor a perfect square on the left side:
(x + -4)(x + -4) = 38.85714286

Calculate the square root of the right side: 6.23354978

Break this problem into two subproblems by setting 
(x + -4) equal to 6.23354978 and -6.23354978.

Subproblem 1

x + -4 = 6.23354978 Simplifying x + -4 = 6.23354978 Reorder the terms: -4 + x = 6.23354978 Solving -4 + x = 6.23354978 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = 6.23354978 + 4 Combine like terms: -4 + 4 = 0 0 + x = 6.23354978 + 4 x = 6.23354978 + 4 Combine like terms: 6.23354978 + 4 = 10.23354978 x = 10.23354978 Simplifying x = 10.23354978

Subproblem 2

x + -4 = -6.23354978 Simplifying x + -4 = -6.23354978 Reorder the terms: -4 + x = -6.23354978 Solving -4 + x = -6.23354978 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = -6.23354978 + 4 Combine like terms: -4 + 4 = 0 0 + x = -6.23354978 + 4 x = -6.23354978 + 4 Combine like terms: -6.23354978 + 4 = -2.23354978 x = -2.23354978 Simplifying x = -2.23354978

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.23354978, -2.23354978}

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