(2x)2=x(x-14)-5

Simple and best practice solution for (2x)2=x(x-14)-5 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 (2x)2=x(x-14)-5 equation:


Simplifying
(2x) * 2 = x(x + -14) + -5

Remove parenthesis around (2x)
2x * 2 = x(x + -14) + -5

Reorder the terms for easier multiplication:
2 * 2x = x(x + -14) + -5

Multiply 2 * 2
4x = x(x + -14) + -5

Reorder the terms:
4x = x(-14 + x) + -5
4x = (-14 * x + x * x) + -5
4x = (-14x + x2) + -5

Reorder the terms:
4x = -5 + -14x + x2

Solving
4x = -5 + -14x + x2

Solving for variable 'x'.

Reorder the terms:
5 + 4x + 14x + -1x2 = -5 + -14x + x2 + 5 + 14x + -1x2

Combine like terms: 4x + 14x = 18x
5 + 18x + -1x2 = -5 + -14x + x2 + 5 + 14x + -1x2

Reorder the terms:
5 + 18x + -1x2 = -5 + 5 + -14x + 14x + x2 + -1x2

Combine like terms: -5 + 5 = 0
5 + 18x + -1x2 = 0 + -14x + 14x + x2 + -1x2
5 + 18x + -1x2 = -14x + 14x + x2 + -1x2

Combine like terms: -14x + 14x = 0
5 + 18x + -1x2 = 0 + x2 + -1x2
5 + 18x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
5 + 18x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-5 + -18x + x2 = 0

Move the constant term to the right:

Add '5' to each side of the equation.
-5 + -18x + 5 + x2 = 0 + 5

Reorder the terms:
-5 + 5 + -18x + x2 = 0 + 5

Combine like terms: -5 + 5 = 0
0 + -18x + x2 = 0 + 5
-18x + x2 = 0 + 5

Combine like terms: 0 + 5 = 5
-18x + x2 = 5

The x term is -18x.  Take half its coefficient (-9).
Square it (81) and add it to both sides.

Add '81' to each side of the equation.
-18x + 81 + x2 = 5 + 81

Reorder the terms:
81 + -18x + x2 = 5 + 81

Combine like terms: 5 + 81 = 86
81 + -18x + x2 = 86

Factor a perfect square on the left side:
(x + -9)(x + -9) = 86

Calculate the square root of the right side: 9.273618495

Break this problem into two subproblems by setting 
(x + -9) equal to 9.273618495 and -9.273618495.

Subproblem 1

x + -9 = 9.273618495 Simplifying x + -9 = 9.273618495 Reorder the terms: -9 + x = 9.273618495 Solving -9 + x = 9.273618495 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + x = 9.273618495 + 9 Combine like terms: -9 + 9 = 0 0 + x = 9.273618495 + 9 x = 9.273618495 + 9 Combine like terms: 9.273618495 + 9 = 18.273618495 x = 18.273618495 Simplifying x = 18.273618495

Subproblem 2

x + -9 = -9.273618495 Simplifying x + -9 = -9.273618495 Reorder the terms: -9 + x = -9.273618495 Solving -9 + x = -9.273618495 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + x = -9.273618495 + 9 Combine like terms: -9 + 9 = 0 0 + x = -9.273618495 + 9 x = -9.273618495 + 9 Combine like terms: -9.273618495 + 9 = -0.273618495 x = -0.273618495 Simplifying x = -0.273618495

Solution

The solution to the problem is based on the solutions from the subproblems. x = {18.273618495, -0.273618495}

See similar equations:

| 42-246= | | -8p+152=-496 | | 2*(u-5)+15=3*(u-4)+10 | | 105+29m=888 | | 24+-9g=-30 | | (7-w)(4w+2)=0 | | 6-6x+-12=2x | | 3q+29=86 | | r-47=-42 | | = -42 | | 47=11-2d | | r^4+18r^2+81=0 | | -41=47-4r | | 12(-2)+4y=-29 | | 0.6x-0.2(5-4x)=0.8(x-7) | | 8(x+2)=8x+2 | | 1x^4-8+2x^4=19 | | 7x+4-4x=3x-9+x | | 7+2(x+6)=-3+2(x-1) | | 8=7x+x^2 | | 8x-3x=2+3 | | 6-(-3-x)-2x=14 | | 2x+4y-7x-7y= | | -72=-56t | | y=2(-4.5)+8 | | 10x+90=180 | | -1.25x-3.5= | | 14x^2+42=0 | | -3x^2+20=-7 | | s^2+2s+9=0 | | x^4+4x^2+4x=0 | | x^4+4x^2+4x=9 |

Equations solver categories