5x^2-36x-11=0

Simple and best practice solution for 5x^2-36x-11=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 5x^2-36x-11=0 equation:


Simplifying
5x2 + -36x + -11 = 0

Reorder the terms:
-11 + -36x + 5x2 = 0

Solving
-11 + -36x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
-2.2 + -7.2x + x2 = 0

Move the constant term to the right:

Add '2.2' to each side of the equation.
-2.2 + -7.2x + 2.2 + x2 = 0 + 2.2

Reorder the terms:
-2.2 + 2.2 + -7.2x + x2 = 0 + 2.2

Combine like terms: -2.2 + 2.2 = 0.0
0.0 + -7.2x + x2 = 0 + 2.2
-7.2x + x2 = 0 + 2.2

Combine like terms: 0 + 2.2 = 2.2
-7.2x + x2 = 2.2

The x term is -7.2x.  Take half its coefficient (-3.6).
Square it (12.96) and add it to both sides.

Add '12.96' to each side of the equation.
-7.2x + 12.96 + x2 = 2.2 + 12.96

Reorder the terms:
12.96 + -7.2x + x2 = 2.2 + 12.96

Combine like terms: 2.2 + 12.96 = 15.16
12.96 + -7.2x + x2 = 15.16

Factor a perfect square on the left side:
(x + -3.6)(x + -3.6) = 15.16

Calculate the square root of the right side: 3.893584467

Break this problem into two subproblems by setting 
(x + -3.6) equal to 3.893584467 and -3.893584467.

Subproblem 1

x + -3.6 = 3.893584467 Simplifying x + -3.6 = 3.893584467 Reorder the terms: -3.6 + x = 3.893584467 Solving -3.6 + x = 3.893584467 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.6' to each side of the equation. -3.6 + 3.6 + x = 3.893584467 + 3.6 Combine like terms: -3.6 + 3.6 = 0.0 0.0 + x = 3.893584467 + 3.6 x = 3.893584467 + 3.6 Combine like terms: 3.893584467 + 3.6 = 7.493584467 x = 7.493584467 Simplifying x = 7.493584467

Subproblem 2

x + -3.6 = -3.893584467 Simplifying x + -3.6 = -3.893584467 Reorder the terms: -3.6 + x = -3.893584467 Solving -3.6 + x = -3.893584467 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.6' to each side of the equation. -3.6 + 3.6 + x = -3.893584467 + 3.6 Combine like terms: -3.6 + 3.6 = 0.0 0.0 + x = -3.893584467 + 3.6 x = -3.893584467 + 3.6 Combine like terms: -3.893584467 + 3.6 = -0.293584467 x = -0.293584467 Simplifying x = -0.293584467

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.493584467, -0.293584467}

See similar equations:

| 5m-15m-12m=5+15-14 | | 4x-y-9=0 | | 4h/7-5=44/21 | | 4x+y+-9=0 | | 15+21x=78 | | 5(2z-1)+7=7z-4(z+3) | | 3d(4+2d)= | | (144-y^2)=0 | | 8y-6y-8=23.62 | | c=(5/9)(F-32) | | 20x^3+30x^2=0 | | x*(-1)=0 | | 5+x^2=0 | | x=(x-1,5)*4 | | 5x^2=-5 | | 5-4x=2-7x | | (2x+20)^2/3=64 | | X^2-4x-5x=-20 | | 8.2x-3.7x=90 | | 5m=-210 | | x*2/3-7x*1/3+6 | | 23u^6y^6-36u^2y^6/-4u^3y^4=0 | | 3x+6=130 | | (5g-2g)+(2g+6g)= | | 2x^2+2x-x-1=0 | | 5x-x+12+2x-7=27 | | -16x-4y=-60 | | 3x^2-12=-16x | | 2m=-32 | | 5x^2=-30x | | 14x+4y=48 | | F/3+5=9 |

Equations solver categories