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

Simple and best practice solution for (x-6)(x+2)=4 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

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


Simplifying
(x + -6)(x + 2) = 4

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

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

Multiply (-6 + x) * (2 + x)
(-6(2 + x) + x(2 + x)) = 4
((2 * -6 + x * -6) + x(2 + x)) = 4
((-12 + -6x) + x(2 + x)) = 4
(-12 + -6x + (2 * x + x * x)) = 4
(-12 + -6x + (2x + x2)) = 4

Combine like terms: -6x + 2x = -4x
(-12 + -4x + x2) = 4

Solving
-12 + -4x + x2 = 4

Solving for variable 'x'.

Reorder the terms:
-12 + -4 + -4x + x2 = 4 + -4

Combine like terms: -12 + -4 = -16
-16 + -4x + x2 = 4 + -4

Combine like terms: 4 + -4 = 0
-16 + -4x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '16' to each side of the equation.
-16 + -4x + 16 + x2 = 0 + 16

Reorder the terms:
-16 + 16 + -4x + x2 = 0 + 16

Combine like terms: -16 + 16 = 0
0 + -4x + x2 = 0 + 16
-4x + x2 = 0 + 16

Combine like terms: 0 + 16 = 16
-4x + x2 = 16

The x term is -4x.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4x + 4 + x2 = 16 + 4

Reorder the terms:
4 + -4x + x2 = 16 + 4

Combine like terms: 16 + 4 = 20
4 + -4x + x2 = 20

Factor a perfect square on the left side:
(x + -2)(x + -2) = 20

Calculate the square root of the right side: 4.472135955

Break this problem into two subproblems by setting 
(x + -2) equal to 4.472135955 and -4.472135955.

Subproblem 1

x + -2 = 4.472135955 Simplifying x + -2 = 4.472135955 Reorder the terms: -2 + x = 4.472135955 Solving -2 + x = 4.472135955 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = 4.472135955 + 2 Combine like terms: -2 + 2 = 0 0 + x = 4.472135955 + 2 x = 4.472135955 + 2 Combine like terms: 4.472135955 + 2 = 6.472135955 x = 6.472135955 Simplifying x = 6.472135955

Subproblem 2

x + -2 = -4.472135955 Simplifying x + -2 = -4.472135955 Reorder the terms: -2 + x = -4.472135955 Solving -2 + x = -4.472135955 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = -4.472135955 + 2 Combine like terms: -2 + 2 = 0 0 + x = -4.472135955 + 2 x = -4.472135955 + 2 Combine like terms: -4.472135955 + 2 = -2.472135955 x = -2.472135955 Simplifying x = -2.472135955

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.472135955, -2.472135955}

See similar equations:

| 2q+4q-3=22q+1 | | 1+5x=-7x+49 | | 56-(((12x224)/8)/8) | | x-.40x=90 | | 0=36-12y-3x | | .13(x+50.00)=30 | | .13(x+50.00)=24.97 | | 3(x^2)-3(y^2)-3x-3y+4=0 | | 3x^2-2x-6=2x^2-6x-3 | | 3(5x-1)=5(2x+4) | | 11x-7y=-17 | | 10y+9=3y | | -10+7x=-7x-38 | | -6u-6u=-3-11 | | -2(-u+4)-u= | | 2x-2-x-3= | | 3+4p=3(x-4)+2 | | cos(16x)=5 | | f(x)=8x/15-x | | 0=-6x+9x^2+5x | | -1(-3x-w)+6(-3w-3x)= | | 7/2=5/x | | -6n+12=-15+21 | | 8(x-9.3)=2.4 | | 67-(3x+7)=3(x+6)+x | | 2+-3(2x+-5)=11 | | 2/5=5/8m | | n^2+5n-24=0 | | 4(2x-2.4)=3x-9.6 | | 5(x+1.15)=4x | | 5.5=10x+5.3 | | (x+4)*(x-1)=2 |

Equations solver categories