-x^2+6x+6=0

Simple and best practice solution for -x^2+6x+6=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+6x+6=0 equation:


Simplifying
-1x2 + 6x + 6 = 0

Reorder the terms:
6 + 6x + -1x2 = 0

Solving
6 + 6x + -1x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-6 + -6x + x2 = 0

Move the constant term to the right:

Add '6' to each side of the equation.
-6 + -6x + 6 + x2 = 0 + 6

Reorder the terms:
-6 + 6 + -6x + x2 = 0 + 6

Combine like terms: -6 + 6 = 0
0 + -6x + x2 = 0 + 6
-6x + x2 = 0 + 6

Combine like terms: 0 + 6 = 6
-6x + x2 = 6

The x term is -6x.  Take half its coefficient (-3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
-6x + 9 + x2 = 6 + 9

Reorder the terms:
9 + -6x + x2 = 6 + 9

Combine like terms: 6 + 9 = 15
9 + -6x + x2 = 15

Factor a perfect square on the left side:
(x + -3)(x + -3) = 15

Calculate the square root of the right side: 3.872983346

Break this problem into two subproblems by setting 
(x + -3) equal to 3.872983346 and -3.872983346.

Subproblem 1

x + -3 = 3.872983346 Simplifying x + -3 = 3.872983346 Reorder the terms: -3 + x = 3.872983346 Solving -3 + x = 3.872983346 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = 3.872983346 + 3 Combine like terms: -3 + 3 = 0 0 + x = 3.872983346 + 3 x = 3.872983346 + 3 Combine like terms: 3.872983346 + 3 = 6.872983346 x = 6.872983346 Simplifying x = 6.872983346

Subproblem 2

x + -3 = -3.872983346 Simplifying x + -3 = -3.872983346 Reorder the terms: -3 + x = -3.872983346 Solving -3 + x = -3.872983346 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = -3.872983346 + 3 Combine like terms: -3 + 3 = 0 0 + x = -3.872983346 + 3 x = -3.872983346 + 3 Combine like terms: -3.872983346 + 3 = -0.872983346 x = -0.872983346 Simplifying x = -0.872983346

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.872983346, -0.872983346}

See similar equations:

| y+1/4=5 | | 5.33x+64=20.4089+8x | | (x^2)-10x+25=35 | | w+2/7=6 | | 9x-w=vx+y | | (x-5)(x-5)=35 | | ax+4=7x+bsolvex | | ax+4=7x+bx | | ax+3=7x+b | | -x^2+15x-34=0 | | -10y=-6x+12 | | x*x+7x=30 | | 0.1429x-9=2 | | A=1/2*23*18 | | -1+4x-3x^2=0 | | 2(x-5)+7x=23 | | y=-1+4x-3x^2 | | 10y=-6x+7 | | 6x-10y=7 | | 5y=10x-2 | | -6(8+7m)=-246 | | 29x+11y=5 | | -7(-3n-5)=98 | | x+x+5=34 | | 5/(3-i) | | 5/3-i | | 7a+3=3a+19 | | 3(4y-7)=15 | | V+(V-32.6)+(V+26.4)=193.6 | | 35-6y=(-5) | | 5(-26)+2y=20 | | 4x-3x+9=6x-4-4x |

Equations solver categories