(x+4)(x+8)=8

Simple and best practice solution for (x+4)(x+8)=8 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+4)(x+8)=8 equation:


Simplifying
(x + 4)(x + 8) = 8

Reorder the terms:
(4 + x)(x + 8) = 8

Reorder the terms:
(4 + x)(8 + x) = 8

Multiply (4 + x) * (8 + x)
(4(8 + x) + x(8 + x)) = 8
((8 * 4 + x * 4) + x(8 + x)) = 8
((32 + 4x) + x(8 + x)) = 8
(32 + 4x + (8 * x + x * x)) = 8
(32 + 4x + (8x + x2)) = 8

Combine like terms: 4x + 8x = 12x
(32 + 12x + x2) = 8

Solving
32 + 12x + x2 = 8

Solving for variable 'x'.

Reorder the terms:
32 + -8 + 12x + x2 = 8 + -8

Combine like terms: 32 + -8 = 24
24 + 12x + x2 = 8 + -8

Combine like terms: 8 + -8 = 0
24 + 12x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-24' to each side of the equation.
24 + 12x + -24 + x2 = 0 + -24

Reorder the terms:
24 + -24 + 12x + x2 = 0 + -24

Combine like terms: 24 + -24 = 0
0 + 12x + x2 = 0 + -24
12x + x2 = 0 + -24

Combine like terms: 0 + -24 = -24
12x + x2 = -24

The x term is 12x.  Take half its coefficient (6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
12x + 36 + x2 = -24 + 36

Reorder the terms:
36 + 12x + x2 = -24 + 36

Combine like terms: -24 + 36 = 12
36 + 12x + x2 = 12

Factor a perfect square on the left side:
(x + 6)(x + 6) = 12

Calculate the square root of the right side: 3.464101615

Break this problem into two subproblems by setting 
(x + 6) equal to 3.464101615 and -3.464101615.

Subproblem 1

x + 6 = 3.464101615 Simplifying x + 6 = 3.464101615 Reorder the terms: 6 + x = 3.464101615 Solving 6 + x = 3.464101615 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = 3.464101615 + -6 Combine like terms: 6 + -6 = 0 0 + x = 3.464101615 + -6 x = 3.464101615 + -6 Combine like terms: 3.464101615 + -6 = -2.535898385 x = -2.535898385 Simplifying x = -2.535898385

Subproblem 2

x + 6 = -3.464101615 Simplifying x + 6 = -3.464101615 Reorder the terms: 6 + x = -3.464101615 Solving 6 + x = -3.464101615 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = -3.464101615 + -6 Combine like terms: 6 + -6 = 0 0 + x = -3.464101615 + -6 x = -3.464101615 + -6 Combine like terms: -3.464101615 + -6 = -9.464101615 x = -9.464101615 Simplifying x = -9.464101615

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-2.535898385, -9.464101615}

See similar equations:

| y=(x-8)(x-15) | | (m-1)(m+9)=8 | | x^2=-28+11x | | -7+4m^2=7m | | 12=5x+6 | | -60=-9x-6 | | 2+9y^2=9y | | -(4y+2)-(-3y-5)=1 | | 4x^3-24x^2+8x=0 | | 14+v=39 | | 50x-10y=100 | | X-7=-21 | | 4(4x-8)=2(8x+3) | | 2x+7=13x-5 | | 3p^2+9p^3-8p^2-2p^3= | | 15-6g=19 | | (8x+1)(3x)=0 | | 9+11s-2=7s+13-2s | | 8.9x+92.57=11.1x+91.51 | | 13y-7=49-y | | 18-4x=7x+7 | | 5n-12=-3+4 | | -6+3r=-4(r+2)+5r | | -5x^2-30x+10=0 | | 4y+13y=136 | | m^2-6m-16=0 | | -9.3x=74.4 | | n/3-4=2 | | y+-4x | | U/15=-4 | | 28x^2-210x+210=0 | | x^2+64=-16x |

Equations solver categories