x^2+17x+12=0

Simple and best practice solution for x^2+17x+12=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+17x+12=0 equation:


Simplifying
x2 + 17x + 12 = 0

Reorder the terms:
12 + 17x + x2 = 0

Solving
12 + 17x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-12' to each side of the equation.
12 + 17x + -12 + x2 = 0 + -12

Reorder the terms:
12 + -12 + 17x + x2 = 0 + -12

Combine like terms: 12 + -12 = 0
0 + 17x + x2 = 0 + -12
17x + x2 = 0 + -12

Combine like terms: 0 + -12 = -12
17x + x2 = -12

The x term is 17x.  Take half its coefficient (8.5).
Square it (72.25) and add it to both sides.

Add '72.25' to each side of the equation.
17x + 72.25 + x2 = -12 + 72.25

Reorder the terms:
72.25 + 17x + x2 = -12 + 72.25

Combine like terms: -12 + 72.25 = 60.25
72.25 + 17x + x2 = 60.25

Factor a perfect square on the left side:
(x + 8.5)(x + 8.5) = 60.25

Calculate the square root of the right side: 7.762087348

Break this problem into two subproblems by setting 
(x + 8.5) equal to 7.762087348 and -7.762087348.

Subproblem 1

x + 8.5 = 7.762087348 Simplifying x + 8.5 = 7.762087348 Reorder the terms: 8.5 + x = 7.762087348 Solving 8.5 + x = 7.762087348 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8.5' to each side of the equation. 8.5 + -8.5 + x = 7.762087348 + -8.5 Combine like terms: 8.5 + -8.5 = 0.0 0.0 + x = 7.762087348 + -8.5 x = 7.762087348 + -8.5 Combine like terms: 7.762087348 + -8.5 = -0.737912652 x = -0.737912652 Simplifying x = -0.737912652

Subproblem 2

x + 8.5 = -7.762087348 Simplifying x + 8.5 = -7.762087348 Reorder the terms: 8.5 + x = -7.762087348 Solving 8.5 + x = -7.762087348 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8.5' to each side of the equation. 8.5 + -8.5 + x = -7.762087348 + -8.5 Combine like terms: 8.5 + -8.5 = 0.0 0.0 + x = -7.762087348 + -8.5 x = -7.762087348 + -8.5 Combine like terms: -7.762087348 + -8.5 = -16.262087348 x = -16.262087348 Simplifying x = -16.262087348

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.737912652, -16.262087348}

See similar equations:

| 8x+2x=2+4 | | 87-3x=24x+21 | | 5x^2-3=15 | | 13-8x=10-29x | | 3x+6=-2 | | 1/4*8=x | | x+(x-33.2)+(x+27.5)=198.9 | | x^2+p^2+2px+q=0 | | 252=-16t+20t+336 | | -7s^2+175=0 | | -84-8x=100-29x | | r^2-144=0 | | x^2-12x+8=x^2+p^2+2px+q | | 2x/x+1=3 | | -2x^2-32x-128=0 | | Y=-16t^2+12t+4 | | -11-5x=6x+5 | | (x+3+2i)(x-3-2i)=0 | | x^2-16k+64=0 | | 8x+4=6x-9 | | (2x+3)(x-4)=6 | | x+2y-3x-y= | | x^4+4x^2+4=9 | | -6x+3(x+5)=-9 | | y=18x | | 50x^2+2x+2=0 | | 0.5(y-14)=5x | | 2x+16=11x-24 | | 5y-6=4 | | 3x^2+15x+3=0 | | 80-4x=41x+20 | | 80-4x=41x+20whatisx |

Equations solver categories