x^2-11x-3=5

Simple and best practice solution for x^2-11x-3=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 x^2-11x-3=5 equation:


Simplifying
x2 + -11x + -3 = 5

Reorder the terms:
-3 + -11x + x2 = 5

Solving
-3 + -11x + x2 = 5

Solving for variable 'x'.

Reorder the terms:
-3 + -5 + -11x + x2 = 5 + -5

Combine like terms: -3 + -5 = -8
-8 + -11x + x2 = 5 + -5

Combine like terms: 5 + -5 = 0
-8 + -11x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '8' to each side of the equation.
-8 + -11x + 8 + x2 = 0 + 8

Reorder the terms:
-8 + 8 + -11x + x2 = 0 + 8

Combine like terms: -8 + 8 = 0
0 + -11x + x2 = 0 + 8
-11x + x2 = 0 + 8

Combine like terms: 0 + 8 = 8
-11x + x2 = 8

The x term is -11x.  Take half its coefficient (-5.5).
Square it (30.25) and add it to both sides.

Add '30.25' to each side of the equation.
-11x + 30.25 + x2 = 8 + 30.25

Reorder the terms:
30.25 + -11x + x2 = 8 + 30.25

Combine like terms: 8 + 30.25 = 38.25
30.25 + -11x + x2 = 38.25

Factor a perfect square on the left side:
(x + -5.5)(x + -5.5) = 38.25

Calculate the square root of the right side: 6.184658438

Break this problem into two subproblems by setting 
(x + -5.5) equal to 6.184658438 and -6.184658438.

Subproblem 1

x + -5.5 = 6.184658438 Simplifying x + -5.5 = 6.184658438 Reorder the terms: -5.5 + x = 6.184658438 Solving -5.5 + x = 6.184658438 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + x = 6.184658438 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + x = 6.184658438 + 5.5 x = 6.184658438 + 5.5 Combine like terms: 6.184658438 + 5.5 = 11.684658438 x = 11.684658438 Simplifying x = 11.684658438

Subproblem 2

x + -5.5 = -6.184658438 Simplifying x + -5.5 = -6.184658438 Reorder the terms: -5.5 + x = -6.184658438 Solving -5.5 + x = -6.184658438 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + x = -6.184658438 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + x = -6.184658438 + 5.5 x = -6.184658438 + 5.5 Combine like terms: -6.184658438 + 5.5 = -0.684658438 x = -0.684658438 Simplifying x = -0.684658438

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.684658438, -0.684658438}

See similar equations:

| -9.87x-18.13x= | | t(t+5)-t(t-8)=3(t-8)-5(t-5) | | an-3a=5 | | 2(3.5)x=(6.2)x | | -2(x+8)=4x-6x+8 | | x/10=3/20 | | -6-5m=-21 | | 15/44 | | 4(x+30)=120 | | 12n= | | x^2-8=15 | | 1350+-1X=x | | 10z-z=-3+6z-1-2 | | X+y=80000 | | x^2+4.4x=4.16 | | 3r^3+15r^2=42r | | x=182-62 | | 4(x+3)-5x=3(3x+1)-7x | | 3x+3=23-x | | 4(x+3)-5x=3(x+1)-7x | | 30=210-4x | | 6y-2x=15 | | ln(cos(pi/2)) | | 15=210-4x | | 1/3-9/10 | | X+(x+5000)=80000 | | 216=180(n-2) | | 48a^2-3b^2= | | h(t)=-16t^2+8t+30 | | 1232344444444444=555555555555555555555555 | | 0.71+0.37t=3.08t-0.91 | | 4/7w-=16 |

Equations solver categories