4x^2+43x-108=0

Simple and best practice solution for 4x^2+43x-108=0 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 4x^2+43x-108=0 equation:


Simplifying
4x2 + 43x + -108 = 0

Reorder the terms:
-108 + 43x + 4x2 = 0

Solving
-108 + 43x + 4x2 = 0

Solving for variable 'x'.

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

Divide each side by '4'.
-27 + 10.75x + x2 = 0

Move the constant term to the right:

Add '27' to each side of the equation.
-27 + 10.75x + 27 + x2 = 0 + 27

Reorder the terms:
-27 + 27 + 10.75x + x2 = 0 + 27

Combine like terms: -27 + 27 = 0
0 + 10.75x + x2 = 0 + 27
10.75x + x2 = 0 + 27

Combine like terms: 0 + 27 = 27
10.75x + x2 = 27

The x term is 10.75x.  Take half its coefficient (5.375).
Square it (28.890625) and add it to both sides.

Add '28.890625' to each side of the equation.
10.75x + 28.890625 + x2 = 27 + 28.890625

Reorder the terms:
28.890625 + 10.75x + x2 = 27 + 28.890625

Combine like terms: 27 + 28.890625 = 55.890625
28.890625 + 10.75x + x2 = 55.890625

Factor a perfect square on the left side:
(x + 5.375)(x + 5.375) = 55.890625

Calculate the square root of the right side: 7.476003277

Break this problem into two subproblems by setting 
(x + 5.375) equal to 7.476003277 and -7.476003277.

Subproblem 1

x + 5.375 = 7.476003277 Simplifying x + 5.375 = 7.476003277 Reorder the terms: 5.375 + x = 7.476003277 Solving 5.375 + x = 7.476003277 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5.375' to each side of the equation. 5.375 + -5.375 + x = 7.476003277 + -5.375 Combine like terms: 5.375 + -5.375 = 0.000 0.000 + x = 7.476003277 + -5.375 x = 7.476003277 + -5.375 Combine like terms: 7.476003277 + -5.375 = 2.101003277 x = 2.101003277 Simplifying x = 2.101003277

Subproblem 2

x + 5.375 = -7.476003277 Simplifying x + 5.375 = -7.476003277 Reorder the terms: 5.375 + x = -7.476003277 Solving 5.375 + x = -7.476003277 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5.375' to each side of the equation. 5.375 + -5.375 + x = -7.476003277 + -5.375 Combine like terms: 5.375 + -5.375 = 0.000 0.000 + x = -7.476003277 + -5.375 x = -7.476003277 + -5.375 Combine like terms: -7.476003277 + -5.375 = -12.851003277 x = -12.851003277 Simplifying x = -12.851003277

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.101003277, -12.851003277}

See similar equations:

| 126=-18a | | (3a+4b)+(-3a+3b)= | | x=-3+2t | | d=1/2(c+4) | | d=2c+8/2 | | 4x^5+28x^4+48x^3=0 | | f(x)=5x^2-5x | | 3x^6-9x^5=30x^4 | | h(t)=-16t^2+38 | | 3n+2=n-8 | | h=-3t^2+20t | | 7-5x=3x | | h=-3t+20t | | -x^5+6x^4-8x^3=0 | | -4t-3=-37 | | x^2+3t=-1 | | t-(-48)=31 | | 5j-3=3j+11 | | 10(r+4)-16=-3(r+3)+2r | | 11x-5=0 | | 6x+6=3(x+6) | | 3w-3=6 | | 16/9+1/3 | | 7.2x^2=-3.6x | | 17/9+1/3 | | 1/2-2/9 | | 5x^2-11x=-6 | | -1/2+2/9 | | 2=7x+4x^2 | | (10a+7b)-(2a+3b)= | | 8x^2-51=0 | | y=7(x-3) |

Equations solver categories