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 = 2
16 + -8x + x2 = 2

Factor a perfect square on the left side:
(x + -4)(x + -4) = 2

Calculate the square root of the right side: 1.414213562

Break this problem into two subproblems by setting 
(x + -4) equal to 1.414213562 and -1.414213562.

Subproblem 1

x + -4 = 1.414213562 Simplifying x + -4 = 1.414213562 Reorder the terms: -4 + x = 1.414213562 Solving -4 + x = 1.414213562 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 = 1.414213562 + 4 Combine like terms: -4 + 4 = 0 0 + x = 1.414213562 + 4 x = 1.414213562 + 4 Combine like terms: 1.414213562 + 4 = 5.414213562 x = 5.414213562 Simplifying x = 5.414213562

Subproblem 2

x + -4 = -1.414213562 Simplifying x + -4 = -1.414213562 Reorder the terms: -4 + x = -1.414213562 Solving -4 + x = -1.414213562 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 = -1.414213562 + 4 Combine like terms: -4 + 4 = 0 0 + x = -1.414213562 + 4 x = -1.414213562 + 4 Combine like terms: -1.414213562 + 4 = 2.585786438 x = 2.585786438 Simplifying x = 2.585786438

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.414213562, 2.585786438}

See similar equations:

| 3s-4b=32 | | 4(d-9)+10= | | 7(2t)+(6w)=1200 | | k-6-8k=2-3k | | 3s-48=32 | | 3x+y+5=0 | | n^2+6-5=75cm^2 | | 10x+9=2x+7 | | 4v^2r-25vr+24r=0 | | 2n-10=-n+n | | 2=-5/6x+8-7/6x | | 0.68+0.14t=2.10t-0.79 | | 25mp^2-45mp=0 | | -2(22x-36)=34(46+4x) | | x+3=11-6x+8x | | 3x=6x+54 | | 24.50=10x+1y | | 7(2x)+(6x)=1200 | | -3/4x+5-9/4x+6=9 | | 2.2x+40.9=8.2-8.7x | | (7a^3+14a+12)+(-6a^3+12a^2-7)= | | z^2+24=11 | | -8x+10=4-7x | | l=540x | | l=5400x | | -6x^2-5x-14=0 | | 10x+15-8x-13=6 | | 8x^2-35x+12= | | -2x+6+4x=-2 | | 8x^2-35+12= | | 1+4n=-13+6n | | 15+15m=51-m |

Equations solver categories