-x^2+36x-144=0

Simple and best practice solution for -x^2+36x-144=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 -x^2+36x-144=0 equation:


Simplifying
-1x2 + 36x + -144 = 0

Reorder the terms:
-144 + 36x + -1x2 = 0

Solving
-144 + 36x + -1x2 = 0

Solving for variable 'x'.

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

Divide each side by '-1'.
144 + -36x + x2 = 0

Move the constant term to the right:

Add '-144' to each side of the equation.
144 + -36x + -144 + x2 = 0 + -144

Reorder the terms:
144 + -144 + -36x + x2 = 0 + -144

Combine like terms: 144 + -144 = 0
0 + -36x + x2 = 0 + -144
-36x + x2 = 0 + -144

Combine like terms: 0 + -144 = -144
-36x + x2 = -144

The x term is -36x.  Take half its coefficient (-18).
Square it (324) and add it to both sides.

Add '324' to each side of the equation.
-36x + 324 + x2 = -144 + 324

Reorder the terms:
324 + -36x + x2 = -144 + 324

Combine like terms: -144 + 324 = 180
324 + -36x + x2 = 180

Factor a perfect square on the left side:
(x + -18)(x + -18) = 180

Calculate the square root of the right side: 13.416407865

Break this problem into two subproblems by setting 
(x + -18) equal to 13.416407865 and -13.416407865.

Subproblem 1

x + -18 = 13.416407865 Simplifying x + -18 = 13.416407865 Reorder the terms: -18 + x = 13.416407865 Solving -18 + x = 13.416407865 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '18' to each side of the equation. -18 + 18 + x = 13.416407865 + 18 Combine like terms: -18 + 18 = 0 0 + x = 13.416407865 + 18 x = 13.416407865 + 18 Combine like terms: 13.416407865 + 18 = 31.416407865 x = 31.416407865 Simplifying x = 31.416407865

Subproblem 2

x + -18 = -13.416407865 Simplifying x + -18 = -13.416407865 Reorder the terms: -18 + x = -13.416407865 Solving -18 + x = -13.416407865 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '18' to each side of the equation. -18 + 18 + x = -13.416407865 + 18 Combine like terms: -18 + 18 = 0 0 + x = -13.416407865 + 18 x = -13.416407865 + 18 Combine like terms: -13.416407865 + 18 = 4.583592135 x = 4.583592135 Simplifying x = 4.583592135

Solution

The solution to the problem is based on the solutions from the subproblems. x = {31.416407865, 4.583592135}

See similar equations:

| 2+5x+x=32 | | 12(t-6)+6t=6(3t+4)-9 | | 0=8x^2-6x-14 | | 7a^2+2a=0 | | 26=3m-7m | | 2(x-7)=8 | | 1+5x=-15+x | | 0=2x^2+x-1 | | -4-2n+3n=4-n | | -12+x=2x+3x | | 5a^2+9a-2= | | 1+3+6x-8=4x+1+7 | | -4x+8=20 | | x^2+36-144=0 | | 6m^2-5m=14 | | 83.3*(0.01)= | | 0.4x-0.2(3-x)=1.8 | | 2b+10=b+4 | | 9-10x-5-4x=6 | | 10c^2+33c-54=0 | | A^5*6a^3=y | | 5x^0y^1= | | (x+1)+(x-1)=e^4 | | .5(10-9x)=1.25 | | .5(10-9x)=.125 | | 8c-1200=5c | | 56765x+68-79=9865 | | 9-17x-5-4x=7 | | -x-8+14x=34 | | 3x+1y=21 | | 4-0.9k=4 | | 1x+2y=12 |

Equations solver categories