(x+10)(x-4)=24

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Solution for (x+10)(x-4)=24 equation:


Simplifying
(x + 10)(x + -4) = 24

Reorder the terms:
(10 + x)(x + -4) = 24

Reorder the terms:
(10 + x)(-4 + x) = 24

Multiply (10 + x) * (-4 + x)
(10(-4 + x) + x(-4 + x)) = 24
((-4 * 10 + x * 10) + x(-4 + x)) = 24
((-40 + 10x) + x(-4 + x)) = 24
(-40 + 10x + (-4 * x + x * x)) = 24
(-40 + 10x + (-4x + x2)) = 24

Combine like terms: 10x + -4x = 6x
(-40 + 6x + x2) = 24

Solving
-40 + 6x + x2 = 24

Solving for variable 'x'.

Reorder the terms:
-40 + -24 + 6x + x2 = 24 + -24

Combine like terms: -40 + -24 = -64
-64 + 6x + x2 = 24 + -24

Combine like terms: 24 + -24 = 0
-64 + 6x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '64' to each side of the equation.
-64 + 6x + 64 + x2 = 0 + 64

Reorder the terms:
-64 + 64 + 6x + x2 = 0 + 64

Combine like terms: -64 + 64 = 0
0 + 6x + x2 = 0 + 64
6x + x2 = 0 + 64

Combine like terms: 0 + 64 = 64
6x + x2 = 64

The x term is 6x.  Take half its coefficient (3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
6x + 9 + x2 = 64 + 9

Reorder the terms:
9 + 6x + x2 = 64 + 9

Combine like terms: 64 + 9 = 73
9 + 6x + x2 = 73

Factor a perfect square on the left side:
(x + 3)(x + 3) = 73

Calculate the square root of the right side: 8.544003745

Break this problem into two subproblems by setting 
(x + 3) equal to 8.544003745 and -8.544003745.

Subproblem 1

x + 3 = 8.544003745 Simplifying x + 3 = 8.544003745 Reorder the terms: 3 + x = 8.544003745 Solving 3 + x = 8.544003745 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = 8.544003745 + -3 Combine like terms: 3 + -3 = 0 0 + x = 8.544003745 + -3 x = 8.544003745 + -3 Combine like terms: 8.544003745 + -3 = 5.544003745 x = 5.544003745 Simplifying x = 5.544003745

Subproblem 2

x + 3 = -8.544003745 Simplifying x + 3 = -8.544003745 Reorder the terms: 3 + x = -8.544003745 Solving 3 + x = -8.544003745 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = -8.544003745 + -3 Combine like terms: 3 + -3 = 0 0 + x = -8.544003745 + -3 x = -8.544003745 + -3 Combine like terms: -8.544003745 + -3 = -11.544003745 x = -11.544003745 Simplifying x = -11.544003745

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.544003745, -11.544003745}

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