x^2=24-4x

Simple and best practice solution for x^2=24-4x 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=24-4x equation:


Simplifying
x2 = 24 + -4x

Solving
x2 = 24 + -4x

Solving for variable 'x'.

Reorder the terms:
-24 + 4x + x2 = 24 + -4x + -24 + 4x

Reorder the terms:
-24 + 4x + x2 = 24 + -24 + -4x + 4x

Combine like terms: 24 + -24 = 0
-24 + 4x + x2 = 0 + -4x + 4x
-24 + 4x + x2 = -4x + 4x

Combine like terms: -4x + 4x = 0
-24 + 4x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '24' to each side of the equation.
-24 + 4x + 24 + x2 = 0 + 24

Reorder the terms:
-24 + 24 + 4x + x2 = 0 + 24

Combine like terms: -24 + 24 = 0
0 + 4x + x2 = 0 + 24
4x + x2 = 0 + 24

Combine like terms: 0 + 24 = 24
4x + x2 = 24

The x term is 4x.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4x + 4 + x2 = 24 + 4

Reorder the terms:
4 + 4x + x2 = 24 + 4

Combine like terms: 24 + 4 = 28
4 + 4x + x2 = 28

Factor a perfect square on the left side:
(x + 2)(x + 2) = 28

Calculate the square root of the right side: 5.291502622

Break this problem into two subproblems by setting 
(x + 2) equal to 5.291502622 and -5.291502622.

Subproblem 1

x + 2 = 5.291502622 Simplifying x + 2 = 5.291502622 Reorder the terms: 2 + x = 5.291502622 Solving 2 + x = 5.291502622 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 5.291502622 + -2 Combine like terms: 2 + -2 = 0 0 + x = 5.291502622 + -2 x = 5.291502622 + -2 Combine like terms: 5.291502622 + -2 = 3.291502622 x = 3.291502622 Simplifying x = 3.291502622

Subproblem 2

x + 2 = -5.291502622 Simplifying x + 2 = -5.291502622 Reorder the terms: 2 + x = -5.291502622 Solving 2 + x = -5.291502622 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = -5.291502622 + -2 Combine like terms: 2 + -2 = 0 0 + x = -5.291502622 + -2 x = -5.291502622 + -2 Combine like terms: -5.291502622 + -2 = -7.291502622 x = -7.291502622 Simplifying x = -7.291502622

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.291502622, -7.291502622}

See similar equations:

| 61=6-45x | | x+3x+2x=90 | | -4x+5=3x-65 | | 15-u=7 | | 3x-3=-36 | | 2x+6=-5x+62 | | 28=2x+7x+10 | | 3x-5=2x+5 | | 15=-2(2+-1) | | -3x+8-3x=-100 | | 8x-2=3x+13 | | 6(-x+2)-(x-3)=3(-x+1) | | 3x+9=0+6x | | 5x^2+8x-36=0 | | 5(1+2x)=85 | | -4x=-40 | | -10+4x=14 | | 3x(x+7)=0 | | 3+x=7 | | 2x+4=-4x+70 | | 7x+9=86 | | 3(x+5)=x^2-4 | | -16=-4-3x-x | | 5-6k+9k=-15+5 | | h(x+5)=X^2-4 | | -14=6c | | 14+8-5=13x-3 | | 9(2p+1)-3p=4p-6 | | 8x-2=10x+8 | | X=144 | | 20x^2-21x=0 | | X-5=44 |

Equations solver categories