x^2+2x-6=-2

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


Simplifying
x2 + 2x + -6 = -2

Reorder the terms:
-6 + 2x + x2 = -2

Solving
-6 + 2x + x2 = -2

Solving for variable 'x'.

Reorder the terms:
-6 + 2 + 2x + x2 = -2 + 2

Combine like terms: -6 + 2 = -4
-4 + 2x + x2 = -2 + 2

Combine like terms: -2 + 2 = 0
-4 + 2x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '4' to each side of the equation.
-4 + 2x + 4 + x2 = 0 + 4

Reorder the terms:
-4 + 4 + 2x + x2 = 0 + 4

Combine like terms: -4 + 4 = 0
0 + 2x + x2 = 0 + 4
2x + x2 = 0 + 4

Combine like terms: 0 + 4 = 4
2x + x2 = 4

The x term is 2x.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2x + 1 + x2 = 4 + 1

Reorder the terms:
1 + 2x + x2 = 4 + 1

Combine like terms: 4 + 1 = 5
1 + 2x + x2 = 5

Factor a perfect square on the left side:
(x + 1)(x + 1) = 5

Calculate the square root of the right side: 2.236067978

Break this problem into two subproblems by setting 
(x + 1) equal to 2.236067978 and -2.236067978.

Subproblem 1

x + 1 = 2.236067978 Simplifying x + 1 = 2.236067978 Reorder the terms: 1 + x = 2.236067978 Solving 1 + x = 2.236067978 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 2.236067978 + -1 Combine like terms: 1 + -1 = 0 0 + x = 2.236067978 + -1 x = 2.236067978 + -1 Combine like terms: 2.236067978 + -1 = 1.236067978 x = 1.236067978 Simplifying x = 1.236067978

Subproblem 2

x + 1 = -2.236067978 Simplifying x + 1 = -2.236067978 Reorder the terms: 1 + x = -2.236067978 Solving 1 + x = -2.236067978 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -2.236067978 + -1 Combine like terms: 1 + -1 = 0 0 + x = -2.236067978 + -1 x = -2.236067978 + -1 Combine like terms: -2.236067978 + -1 = -3.236067978 x = -3.236067978 Simplifying x = -3.236067978

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.236067978, -3.236067978}

See similar equations:

| T-8=12.6 | | 4w-2= | | 45=-7x+220 | | x-2+3x-22+17=180 | | 4b-1=18+6 | | -10c-7.97=-5c+15.67-3.8c | | a=4/5/450 | | -79=180 | | 9p(9+10)=25 | | X+65+x+25=180 | | 3x=1/4-7-x/2-2 | | y=(4x-6)/3 | | (2xy)(3x)= | | 8x^2(2x^2-3x+8)= | | 3x+17=x(2)+10 | | 0.9x=135 | | k/41/2 | | 4q+9=-5 | | x+0.9x=100 | | 5x-y=37 | | y=4x-6/3 | | 9q+4=-5 | | P^2+2pq-24pq^2=0 | | -6.62-14.9t=-19.78-17.7t | | d=2+1d | | 8/10x=90 | | 7k^2+4k=0 | | -19.04-17.8p=19.72-18.9p-19.3p | | 12n-3=6 | | Tan(7x)=0 | | 2.24+12.1j=17.7j | | 5m+2=9 |

Equations solver categories