x^2+12x-61=0

Simple and best practice solution for x^2+12x-61=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+12x-61=0 equation:


Simplifying
x2 + 12x + -61 = 0

Reorder the terms:
-61 + 12x + x2 = 0

Solving
-61 + 12x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '61' to each side of the equation.
-61 + 12x + 61 + x2 = 0 + 61

Reorder the terms:
-61 + 61 + 12x + x2 = 0 + 61

Combine like terms: -61 + 61 = 0
0 + 12x + x2 = 0 + 61
12x + x2 = 0 + 61

Combine like terms: 0 + 61 = 61
12x + x2 = 61

The x term is 12x.  Take half its coefficient (6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
12x + 36 + x2 = 61 + 36

Reorder the terms:
36 + 12x + x2 = 61 + 36

Combine like terms: 61 + 36 = 97
36 + 12x + x2 = 97

Factor a perfect square on the left side:
(x + 6)(x + 6) = 97

Calculate the square root of the right side: 9.848857802

Break this problem into two subproblems by setting 
(x + 6) equal to 9.848857802 and -9.848857802.

Subproblem 1

x + 6 = 9.848857802 Simplifying x + 6 = 9.848857802 Reorder the terms: 6 + x = 9.848857802 Solving 6 + x = 9.848857802 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = 9.848857802 + -6 Combine like terms: 6 + -6 = 0 0 + x = 9.848857802 + -6 x = 9.848857802 + -6 Combine like terms: 9.848857802 + -6 = 3.848857802 x = 3.848857802 Simplifying x = 3.848857802

Subproblem 2

x + 6 = -9.848857802 Simplifying x + 6 = -9.848857802 Reorder the terms: 6 + x = -9.848857802 Solving 6 + x = -9.848857802 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = -9.848857802 + -6 Combine like terms: 6 + -6 = 0 0 + x = -9.848857802 + -6 x = -9.848857802 + -6 Combine like terms: -9.848857802 + -6 = -15.848857802 x = -15.848857802 Simplifying x = -15.848857802

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.848857802, -15.848857802}

See similar equations:

| 210=54-u | | 2cos(5x)= | | C=33 | | 15a=3j | | 9(4w+6)-3(3w-5)= | | 24=.30x | | 6x+5-x=25 | | n^3+n-4n^2-4= | | 24=.3g | | 1+9x^2+x^4= | | 7x-20=5x+9 | | -5y+2x=5 | | 2x+17=-7 | | X(x^2+19x-72)=0 | | -2y-7=15y+14 | | 30=2d/7 | | 2m+40= | | 0.2b+16-b=4.8 | | x-3=4x+3 | | -x-16=2x+11 | | 3/x=0.5 | | =lnabs(-8x^37) | | 6x-18=2x+18 | | 120=40(t) | | 6x+23=2x+7 | | x^3-x^2-36x+68=0 | | n^2+7n-2340=0 | | 5x-2=4x-8 | | 5x+21=2x+9 | | 1-9n=8 | | 180=18y+7x-2 | | 6x^2-29xy+13y^2= |

Equations solver categories