11x^2+2x-11=0

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


Simplifying
11x2 + 2x + -11 = 0

Reorder the terms:
-11 + 2x + 11x2 = 0

Solving
-11 + 2x + 11x2 = 0

Solving for variable 'x'.

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

Divide each side by '11'.
-1 + 0.1818181818x + x2 = 0

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + 0.1818181818x + 1 + x2 = 0 + 1

Reorder the terms:
-1 + 1 + 0.1818181818x + x2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 0.1818181818x + x2 = 0 + 1
0.1818181818x + x2 = 0 + 1

Combine like terms: 0 + 1 = 1
0.1818181818x + x2 = 1

The x term is 0.1818181818x.  Take half its coefficient (0.0909090909).
Square it (0.008264462808) and add it to both sides.

Add '0.008264462808' to each side of the equation.
0.1818181818x + 0.008264462808 + x2 = 1 + 0.008264462808

Reorder the terms:
0.008264462808 + 0.1818181818x + x2 = 1 + 0.008264462808

Combine like terms: 1 + 0.008264462808 = 1.008264462808
0.008264462808 + 0.1818181818x + x2 = 1.008264462808

Factor a perfect square on the left side:
(x + 0.0909090909)(x + 0.0909090909) = 1.008264462808

Calculate the square root of the right side: 1.004123729

Break this problem into two subproblems by setting 
(x + 0.0909090909) equal to 1.004123729 and -1.004123729.

Subproblem 1

x + 0.0909090909 = 1.004123729 Simplifying x + 0.0909090909 = 1.004123729 Reorder the terms: 0.0909090909 + x = 1.004123729 Solving 0.0909090909 + x = 1.004123729 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.0909090909' to each side of the equation. 0.0909090909 + -0.0909090909 + x = 1.004123729 + -0.0909090909 Combine like terms: 0.0909090909 + -0.0909090909 = 0.0000000000 0.0000000000 + x = 1.004123729 + -0.0909090909 x = 1.004123729 + -0.0909090909 Combine like terms: 1.004123729 + -0.0909090909 = 0.9132146381 x = 0.9132146381 Simplifying x = 0.9132146381

Subproblem 2

x + 0.0909090909 = -1.004123729 Simplifying x + 0.0909090909 = -1.004123729 Reorder the terms: 0.0909090909 + x = -1.004123729 Solving 0.0909090909 + x = -1.004123729 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.0909090909' to each side of the equation. 0.0909090909 + -0.0909090909 + x = -1.004123729 + -0.0909090909 Combine like terms: 0.0909090909 + -0.0909090909 = 0.0000000000 0.0000000000 + x = -1.004123729 + -0.0909090909 x = -1.004123729 + -0.0909090909 Combine like terms: -1.004123729 + -0.0909090909 = -1.0950328199 x = -1.0950328199 Simplifying x = -1.0950328199

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.9132146381, -1.0950328199}

See similar equations:

| 10m+12=10m-22 | | 2a+2a-3b= | | 6(9x+8)=72 | | 3-9x+7x+x+9x= | | 1-38=5x | | 8-2x+5-4x=25 | | 15=1+3p+4p | | -2(4)(-5)= | | 9x-(5x+3)= | | 8(y-10)=16-6y | | Y+19y-10y= | | Y=2(10)-2.5 | | -(1-5x)+8=-17+21 | | 135=6j+1w | | x*x-7X=18 | | X(y+10)= | | M+3m+2n= | | 2y-6=y^2-x^2 | | 0=4+1x | | 2x-4+9-4=4x+7x+8 | | -12+2x=-4 | | y^3+y^2-4y+2=0 | | 52=j+28 | | 500x+30=150x+20 | | X+(5X*.4)=225 | | 1-4w+2(2-w)=3w+7 | | -5b+24=-8(b-6)6b | | 6x^2+4(5x^2-x)-2x= | | (X-6)(x+1)=8 | | -2.8=4.2 | | 10x+250=500 | | 64x^24(x^0)= |

Equations solver categories