(x-2)(x+8)=2

Simple and best practice solution for (x-2)(x+8)=2 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-2)(x+8)=2 equation:


Simplifying
(x + -2)(x + 8) = 2

Reorder the terms:
(-2 + x)(x + 8) = 2

Reorder the terms:
(-2 + x)(8 + x) = 2

Multiply (-2 + x) * (8 + x)
(-2(8 + x) + x(8 + x)) = 2
((8 * -2 + x * -2) + x(8 + x)) = 2
((-16 + -2x) + x(8 + x)) = 2
(-16 + -2x + (8 * x + x * x)) = 2
(-16 + -2x + (8x + x2)) = 2

Combine like terms: -2x + 8x = 6x
(-16 + 6x + x2) = 2

Solving
-16 + 6x + x2 = 2

Solving for variable 'x'.

Reorder the terms:
-16 + -2 + 6x + x2 = 2 + -2

Combine like terms: -16 + -2 = -18
-18 + 6x + x2 = 2 + -2

Combine like terms: 2 + -2 = 0
-18 + 6x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '18' to each side of the equation.
-18 + 6x + 18 + x2 = 0 + 18

Reorder the terms:
-18 + 18 + 6x + x2 = 0 + 18

Combine like terms: -18 + 18 = 0
0 + 6x + x2 = 0 + 18
6x + x2 = 0 + 18

Combine like terms: 0 + 18 = 18
6x + x2 = 18

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 = 18 + 9

Reorder the terms:
9 + 6x + x2 = 18 + 9

Combine like terms: 18 + 9 = 27
9 + 6x + x2 = 27

Factor a perfect square on the left side:
(x + 3)(x + 3) = 27

Calculate the square root of the right side: 5.196152423

Break this problem into two subproblems by setting 
(x + 3) equal to 5.196152423 and -5.196152423.

Subproblem 1

x + 3 = 5.196152423 Simplifying x + 3 = 5.196152423 Reorder the terms: 3 + x = 5.196152423 Solving 3 + x = 5.196152423 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 = 5.196152423 + -3 Combine like terms: 3 + -3 = 0 0 + x = 5.196152423 + -3 x = 5.196152423 + -3 Combine like terms: 5.196152423 + -3 = 2.196152423 x = 2.196152423 Simplifying x = 2.196152423

Subproblem 2

x + 3 = -5.196152423 Simplifying x + 3 = -5.196152423 Reorder the terms: 3 + x = -5.196152423 Solving 3 + x = -5.196152423 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 = -5.196152423 + -3 Combine like terms: 3 + -3 = 0 0 + x = -5.196152423 + -3 x = -5.196152423 + -3 Combine like terms: -5.196152423 + -3 = -8.196152423 x = -8.196152423 Simplifying x = -8.196152423

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.196152423, -8.196152423}

See similar equations:

| 9y+3-2y+7= | | 6(X+5)-(4x-4)= | | 2(3p-1)-3(p-4)= | | 78200/(68*46)= | | 6p+10q=400 | | logx^2-1=0 | | (5x^5y^7)^-2/10x^3y^5 | | 56ab/a=0 | | .07(18000-x)+.1x=1590 | | M^4+4m^2-12=0 | | 2a+6b=100 | | 3x-18/9-x= | | 9=3x^2-3x | | sin(2x)+3cos(2x)=0 | | f(-1)=3/(x^5) | | 3x+104=0 | | 5x-4p=27 | | 4x+22=-17+7x | | X-3-5=3 | | 2c+14=6-5 | | 1/5w-3=6/5w | | (9x-y)=0 | | 4x+28=340 | | p+(-2)=6 | | (-3)-3= | | 3x+y=2480 | | v/3=2 | | 5w+5=w-10 | | -116=4x+2(-6x-10) | | 4x-2=-5x+18-2x | | -11x-82=-148 | | 4x-5(-x-2)=9 |

Equations solver categories