x^2+8x+16-4=14

Simple and best practice solution for x^2+8x+16-4=14 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+8x+16-4=14 equation:


Simplifying
x2 + 8x + 16 + -4 = 14

Reorder the terms:
16 + -4 + 8x + x2 = 14

Combine like terms: 16 + -4 = 12
12 + 8x + x2 = 14

Solving
12 + 8x + x2 = 14

Solving for variable 'x'.

Reorder the terms:
12 + -14 + 8x + x2 = 14 + -14

Combine like terms: 12 + -14 = -2
-2 + 8x + x2 = 14 + -14

Combine like terms: 14 + -14 = 0
-2 + 8x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + 8x + 2 + x2 = 0 + 2

Reorder the terms:
-2 + 2 + 8x + x2 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + 8x + x2 = 0 + 2
8x + x2 = 0 + 2

Combine like terms: 0 + 2 = 2
8x + x2 = 2

The x term is 8x.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8x + 16 + x2 = 2 + 16

Reorder the terms:
16 + 8x + x2 = 2 + 16

Combine like terms: 2 + 16 = 18
16 + 8x + x2 = 18

Factor a perfect square on the left side:
(x + 4)(x + 4) = 18

Calculate the square root of the right side: 4.242640687

Break this problem into two subproblems by setting 
(x + 4) equal to 4.242640687 and -4.242640687.

Subproblem 1

x + 4 = 4.242640687 Simplifying x + 4 = 4.242640687 Reorder the terms: 4 + x = 4.242640687 Solving 4 + x = 4.242640687 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = 4.242640687 + -4 Combine like terms: 4 + -4 = 0 0 + x = 4.242640687 + -4 x = 4.242640687 + -4 Combine like terms: 4.242640687 + -4 = 0.242640687 x = 0.242640687 Simplifying x = 0.242640687

Subproblem 2

x + 4 = -4.242640687 Simplifying x + 4 = -4.242640687 Reorder the terms: 4 + x = -4.242640687 Solving 4 + x = -4.242640687 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = -4.242640687 + -4 Combine like terms: 4 + -4 = 0 0 + x = -4.242640687 + -4 x = -4.242640687 + -4 Combine like terms: -4.242640687 + -4 = -8.242640687 x = -8.242640687 Simplifying x = -8.242640687

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.242640687, -8.242640687}

See similar equations:

| 3+3(4x-6)=9-5(2x+1) | | 7z+7=-3x+77 | | 80=65+2x | | 2y-3=11y+60 | | 3x^2+4=-23 | | 7x+20=-3+50 | | 6+5n-8n=4n-6n | | 9x^2+76=54x | | 8/3n-11=5 | | 4(5x+4)-3= | | 12x-9=27-6x | | .4(5x+2)=42 | | 6m=11m-4 | | 20(x-2)=60 | | 4x-6=7x-42 | | 7z-82=74 | | 133=-16t^2+96t+5 | | t-4t=21 | | (3x+5)(3x^2-22x+24)=0 | | 6x+97=2080 | | 1/2y(5y) | | 7x+6*.25=5.00 | | 51/17=3/20 | | X+2x-y-3y=3 | | x^2-3x-18=(x-a)(x+3) | | 7x+6y=5.00 | | 81+x=195 | | 33x^(3/2)-58x-1890 | | m+3-m=4 | | (2p+3)+(2p+3)=(6p-4) | | 2/3.5m | | 32x+200=40(x+2) |

Equations solver categories