(4-x)*(2+x)=-34

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Solution for (4-x)*(2+x)=-34 equation:


Simplifying
(4 + -1x)(2 + x) = -34

Multiply (4 + -1x) * (2 + x)
(4(2 + x) + -1x * (2 + x)) = -34
((2 * 4 + x * 4) + -1x * (2 + x)) = -34
((8 + 4x) + -1x * (2 + x)) = -34
(8 + 4x + (2 * -1x + x * -1x)) = -34
(8 + 4x + (-2x + -1x2)) = -34

Combine like terms: 4x + -2x = 2x
(8 + 2x + -1x2) = -34

Solving
8 + 2x + -1x2 = -34

Solving for variable 'x'.

Reorder the terms:
8 + 34 + 2x + -1x2 = -34 + 34

Combine like terms: 8 + 34 = 42
42 + 2x + -1x2 = -34 + 34

Combine like terms: -34 + 34 = 0
42 + 2x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-42 + -2x + x2 = 0

Move the constant term to the right:

Add '42' to each side of the equation.
-42 + -2x + 42 + x2 = 0 + 42

Reorder the terms:
-42 + 42 + -2x + x2 = 0 + 42

Combine like terms: -42 + 42 = 0
0 + -2x + x2 = 0 + 42
-2x + x2 = 0 + 42

Combine like terms: 0 + 42 = 42
-2x + x2 = 42

The x term is -2x.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x + 1 + x2 = 42 + 1

Reorder the terms:
1 + -2x + x2 = 42 + 1

Combine like terms: 42 + 1 = 43
1 + -2x + x2 = 43

Factor a perfect square on the left side:
(x + -1)(x + -1) = 43

Calculate the square root of the right side: 6.557438524

Break this problem into two subproblems by setting 
(x + -1) equal to 6.557438524 and -6.557438524.

Subproblem 1

x + -1 = 6.557438524 Simplifying x + -1 = 6.557438524 Reorder the terms: -1 + x = 6.557438524 Solving -1 + x = 6.557438524 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = 6.557438524 + 1 Combine like terms: -1 + 1 = 0 0 + x = 6.557438524 + 1 x = 6.557438524 + 1 Combine like terms: 6.557438524 + 1 = 7.557438524 x = 7.557438524 Simplifying x = 7.557438524

Subproblem 2

x + -1 = -6.557438524 Simplifying x + -1 = -6.557438524 Reorder the terms: -1 + x = -6.557438524 Solving -1 + x = -6.557438524 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = -6.557438524 + 1 Combine like terms: -1 + 1 = 0 0 + x = -6.557438524 + 1 x = -6.557438524 + 1 Combine like terms: -6.557438524 + 1 = -5.557438524 x = -5.557438524 Simplifying x = -5.557438524

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.557438524, -5.557438524}

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