x^2+11x-19=0

Simple and best practice solution for x^2+11x-19=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+11x-19=0 equation:


Simplifying
x2 + 11x + -19 = 0

Reorder the terms:
-19 + 11x + x2 = 0

Solving
-19 + 11x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '19' to each side of the equation.
-19 + 11x + 19 + x2 = 0 + 19

Reorder the terms:
-19 + 19 + 11x + x2 = 0 + 19

Combine like terms: -19 + 19 = 0
0 + 11x + x2 = 0 + 19
11x + x2 = 0 + 19

Combine like terms: 0 + 19 = 19
11x + x2 = 19

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 = 19 + 30.25

Reorder the terms:
30.25 + 11x + x2 = 19 + 30.25

Combine like terms: 19 + 30.25 = 49.25
30.25 + 11x + x2 = 49.25

Factor a perfect square on the left side:
(x + 5.5)(x + 5.5) = 49.25

Calculate the square root of the right side: 7.017834424

Break this problem into two subproblems by setting 
(x + 5.5) equal to 7.017834424 and -7.017834424.

Subproblem 1

x + 5.5 = 7.017834424 Simplifying x + 5.5 = 7.017834424 Reorder the terms: 5.5 + x = 7.017834424 Solving 5.5 + x = 7.017834424 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 = 7.017834424 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + x = 7.017834424 + -5.5 x = 7.017834424 + -5.5 Combine like terms: 7.017834424 + -5.5 = 1.517834424 x = 1.517834424 Simplifying x = 1.517834424

Subproblem 2

x + 5.5 = -7.017834424 Simplifying x + 5.5 = -7.017834424 Reorder the terms: 5.5 + x = -7.017834424 Solving 5.5 + x = -7.017834424 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 = -7.017834424 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + x = -7.017834424 + -5.5 x = -7.017834424 + -5.5 Combine like terms: -7.017834424 + -5.5 = -12.517834424 x = -12.517834424 Simplifying x = -12.517834424

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.517834424, -12.517834424}

See similar equations:

| 18s+6=18s+1 | | 440.2908=105.5668+27.88*h | | (x-3/2)^2=1/4 | | [3x-6]+[2y-10]=0 | | -x*x*x+10*(x*x)-27*x+34=0 | | 16981.12=6.28*r^2+6.28*r*195 | | 25722.88=6.28*r^2+6.28*r*240 | | (2x+3y)dx=(4x-y+5)dy | | 2ln(x+4)=3 | | 2ln(x)+4=3 | | 285-60=x | | (z^2)+2z+2(1+2i)=0 | | 360-75=x | | 2lnx+4=3 | | *+*+*/7=140 | | 0=27x-3x^2+17 | | (0.75)x+0.50=3.50 | | [(20-6)+8]= | | sinx=a-16 | | 4t+5=7t-2(t-4)-2t | | 100=1/2*9.8*t*t | | 2/3m-5/6m= | | 2/3m-5/6m | | 3-(x+4)=27 | | 5x+32=-3x(x-24) | | 5x-8=13+(x-3) | | 8+3x2/2 | | x^10=64 | | 12k+5=8k+2.5 | | 12*x^4-70*x^3+124*x^2-70*x+12=0 | | 94.9536=20.3472+11.304*h | | -3(8x+11)=6(-4r-13) |

Equations solver categories