x^2=8x+14

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


Simplifying
x2 = 8x + 14

Reorder the terms:
x2 = 14 + 8x

Solving
x2 = 14 + 8x

Solving for variable 'x'.

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

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

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

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

Begin completing the square.

Move the constant term to the right:

Add '14' to each side of the equation.
-14 + -8x + 14 + x2 = 0 + 14

Reorder the terms:
-14 + 14 + -8x + x2 = 0 + 14

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

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

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 = 14 + 16

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

Combine like terms: 14 + 16 = 30
16 + -8x + x2 = 30

Factor a perfect square on the left side:
(x + -4)(x + -4) = 30

Calculate the square root of the right side: 5.477225575

Break this problem into two subproblems by setting 
(x + -4) equal to 5.477225575 and -5.477225575.

Subproblem 1

x + -4 = 5.477225575 Simplifying x + -4 = 5.477225575 Reorder the terms: -4 + x = 5.477225575 Solving -4 + x = 5.477225575 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 = 5.477225575 + 4 Combine like terms: -4 + 4 = 0 0 + x = 5.477225575 + 4 x = 5.477225575 + 4 Combine like terms: 5.477225575 + 4 = 9.477225575 x = 9.477225575 Simplifying x = 9.477225575

Subproblem 2

x + -4 = -5.477225575 Simplifying x + -4 = -5.477225575 Reorder the terms: -4 + x = -5.477225575 Solving -4 + x = -5.477225575 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 = -5.477225575 + 4 Combine like terms: -4 + 4 = 0 0 + x = -5.477225575 + 4 x = -5.477225575 + 4 Combine like terms: -5.477225575 + 4 = -1.477225575 x = -1.477225575 Simplifying x = -1.477225575

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.477225575, -1.477225575}

See similar equations:

| 0,(6)*(x+3)-0,(3)*(2x+1)=0,(5)*(x+2) | | 3(2x-(14.5))=24.9 | | 9x+7=-3+2x+24 | | -1/4n+5=2 | | 1+2m-7m=0 | | (x-7)2+(y-3)2=4.49 | | 67=34x+76 | | 12x^2+144x+6480=0 | | 3=-3x-6 | | 6x+12y=26 | | 96=4(3m-6)+8m | | 2(q-4)-2=4 | | 2x+4y-2z=3 | | (a*a*a)+(b*b*b)=(c*c*c) | | 0=-2x-3+6x^3+9x^2 | | 5x+14=-46 | | 20x+40y=26 | | [x-7]=-1 | | 4=6-b | | 20x+40y=16 | | (3-x).(-5)=40 | | 5(x+3)+8=14x+2 | | -8(b+3)-7b=11-8b | | 4(x+3)-4=8(1-2x+1) | | 12p-9=-5 | | 25=-1000 | | (9g-6)=(5g+15) | | (-2d^2+s)(5d^2-6s)=0 | | (3-x)(3-x)(3-x)=0 | | -2x^2+x-10=0 | | -9w^2-8w+1=0 | | 2000=5x^2-200x+4000 |

Equations solver categories