1x^2+11x+8=0

Simple and best practice solution for 1x^2+11x+8=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 1x^2+11x+8=0 equation:


Simplifying
1x2 + 11x + 8 = 0

Reorder the terms:
8 + 11x + 1x2 = 0

Solving
8 + 11x + 1x2 = 0

Solving for variable 'x'.

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 = 22.25
30.25 + 11x + x2 = 22.25

Factor a perfect square on the left side:
(x + 5.5)(x + 5.5) = 22.25

Calculate the square root of the right side: 4.716990566

Break this problem into two subproblems by setting 
(x + 5.5) equal to 4.716990566 and -4.716990566.

Subproblem 1

x + 5.5 = 4.716990566 Simplifying x + 5.5 = 4.716990566 Reorder the terms: 5.5 + x = 4.716990566 Solving 5.5 + x = 4.716990566 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 = 4.716990566 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + x = 4.716990566 + -5.5 x = 4.716990566 + -5.5 Combine like terms: 4.716990566 + -5.5 = -0.783009434 x = -0.783009434 Simplifying x = -0.783009434

Subproblem 2

x + 5.5 = -4.716990566 Simplifying x + 5.5 = -4.716990566 Reorder the terms: 5.5 + x = -4.716990566 Solving 5.5 + x = -4.716990566 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 = -4.716990566 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + x = -4.716990566 + -5.5 x = -4.716990566 + -5.5 Combine like terms: -4.716990566 + -5.5 = -10.216990566 x = -10.216990566 Simplifying x = -10.216990566

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.783009434, -10.216990566}

See similar equations:

| 2(x-3)+5=5x-3(2+x) | | 3x+4x-7x+y=90 | | (6-w)/4=5 | | (x^2-8)(x^2-1)=8 | | 3x+4-7x+y=90 | | -4x-3=4 | | 2.6=0.2r | | 8x-7=12+11x | | 4(8x-2)=3(9x+9) | | X-9+2wx=9 | | -6(2)-2y=0 | | 7y-4=35-5 | | -6(1)-2y=0 | | 6(2x+3)=2(3x+3) | | -6(0)-2y=0 | | 3tan^2A-8tanA+5= | | 20v=-4v^2 | | 121x^2+44x-32=0 | | A=2(212+b(2)).06 | | 3(-1)+y=-5 | | 5(3x-6)=15x-30 | | (75x+1)+(21x-7)=25 | | 6g+16=7g | | 4x+10=5x-13 | | 45=2x-3 | | 3(2)+y=-5 | | 2x-100x=x+50+2x-100-20 | | 3(1)+y=-5 | | 6g+15=7g | | 25x^2=27x | | 5t^2+8t+1=0 | | 3(0)+y=-5 |

Equations solver categories