-x^2-4x+6=0

Simple and best practice solution for -x^2-4x+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^2-4x+6=0 equation:


Simplifying
-1x2 + -4x + 6 = 0

Reorder the terms:
6 + -4x + -1x2 = 0

Solving
6 + -4x + -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 + 4x + x2 = 0

Move the constant term to the right:

Add '6' to each side of the equation.
-6 + 4x + 6 + x2 = 0 + 6

Reorder the terms:
-6 + 6 + 4x + x2 = 0 + 6

Combine like terms: -6 + 6 = 0
0 + 4x + x2 = 0 + 6
4x + x2 = 0 + 6

Combine like terms: 0 + 6 = 6
4x + x2 = 6

The x term is 4x.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4x + 4 + x2 = 6 + 4

Reorder the terms:
4 + 4x + x2 = 6 + 4

Combine like terms: 6 + 4 = 10
4 + 4x + x2 = 10

Factor a perfect square on the left side:
(x + 2)(x + 2) = 10

Calculate the square root of the right side: 3.16227766

Break this problem into two subproblems by setting 
(x + 2) equal to 3.16227766 and -3.16227766.

Subproblem 1

x + 2 = 3.16227766 Simplifying x + 2 = 3.16227766 Reorder the terms: 2 + x = 3.16227766 Solving 2 + x = 3.16227766 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 3.16227766 + -2 Combine like terms: 2 + -2 = 0 0 + x = 3.16227766 + -2 x = 3.16227766 + -2 Combine like terms: 3.16227766 + -2 = 1.16227766 x = 1.16227766 Simplifying x = 1.16227766

Subproblem 2

x + 2 = -3.16227766 Simplifying x + 2 = -3.16227766 Reorder the terms: 2 + x = -3.16227766 Solving 2 + x = -3.16227766 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = -3.16227766 + -2 Combine like terms: 2 + -2 = 0 0 + x = -3.16227766 + -2 x = -3.16227766 + -2 Combine like terms: -3.16227766 + -2 = -5.16227766 x = -5.16227766 Simplifying x = -5.16227766

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.16227766, -5.16227766}

See similar equations:

| 3x+0.2=1.7 | | V+92=99 | | 2(4c+4)-8(c-7)=59 | | 3a^2+17ab+10b^2=0 | | 8n-2+4n=66-6n | | 2(m+3)-4(2m+1)=m-3(2-m) | | 8-4(8x-7)=92 | | 14-3(5t-12)=1-(20t+10) | | 6(3a+4)+5(4a-2)a=5 | | -10+18=-18+(-10) | | 2=-6@+4 | | 0=-32-8-10x | | -2(n-4)+6n=-(2-3n) | | 2x/11=17 | | -1+[3+(-8)+(-1)]= | | -(1-3n)=7(n-7) | | 1/4*+6.5=-1/4*+9.5 | | 2x-2(3x-5)=20 | | 5x-16=2(x+10) | | .3m^3(2m^3-12m^2+2m+25)= | | -8-6x=46 | | 5+r=2-2r | | -4.095+b=18.655 | | 3x-55=2x-5 | | 5(6+5x)=5(5x-7)-3 | | -84=-6(5x-6) | | 12+[-4+(-9)]= | | U+13=83 | | -3-7x=53 | | 3x-4=7x+6 | | 2y+20=25 | | 6+2(2x+3)=12 |

Equations solver categories