x^2=-2x+6

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


Simplifying
x2 = -2x + 6

Reorder the terms:
x2 = 6 + -2x

Solving
x2 = 6 + -2x

Solving for variable 'x'.

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

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

Combine like terms: 6 + -6 = 0
-6 + 2x + x2 = 0 + -2x + 2x
-6 + 2x + x2 = -2x + 2x

Combine like terms: -2x + 2x = 0
-6 + 2x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '6' to each side of the equation.
-6 + 2x + 6 + x2 = 0 + 6

Reorder the terms:
-6 + 6 + 2x + x2 = 0 + 6

Combine like terms: -6 + 6 = 0
0 + 2x + x2 = 0 + 6
2x + x2 = 0 + 6

Combine like terms: 0 + 6 = 6
2x + x2 = 6

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 = 6 + 1

Reorder the terms:
1 + 2x + x2 = 6 + 1

Combine like terms: 6 + 1 = 7
1 + 2x + x2 = 7

Factor a perfect square on the left side:
(x + 1)(x + 1) = 7

Calculate the square root of the right side: 2.645751311

Break this problem into two subproblems by setting 
(x + 1) equal to 2.645751311 and -2.645751311.

Subproblem 1

x + 1 = 2.645751311 Simplifying x + 1 = 2.645751311 Reorder the terms: 1 + x = 2.645751311 Solving 1 + x = 2.645751311 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 = 2.645751311 + -1 Combine like terms: 1 + -1 = 0 0 + x = 2.645751311 + -1 x = 2.645751311 + -1 Combine like terms: 2.645751311 + -1 = 1.645751311 x = 1.645751311 Simplifying x = 1.645751311

Subproblem 2

x + 1 = -2.645751311 Simplifying x + 1 = -2.645751311 Reorder the terms: 1 + x = -2.645751311 Solving 1 + x = -2.645751311 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 = -2.645751311 + -1 Combine like terms: 1 + -1 = 0 0 + x = -2.645751311 + -1 x = -2.645751311 + -1 Combine like terms: -2.645751311 + -1 = -3.645751311 x = -3.645751311 Simplifying x = -3.645751311

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.645751311, -3.645751311}

See similar equations:

| 72=2L+2W | | x^2=2x-6 | | 4x^2+x^2=144 | | ln(x)+ln(9x)=-3 | | x^2-y^2=32 | | x+25=2x+50 | | 5x^3+15=0 | | 5k=110+2k | | 6(4x-4)-[2(2x-3)+5]= | | 4+7(x-12)=38 | | b+29=0 | | 3-y=3x-24 | | (4x-4)(5x+4)= | | (13x+14)(6x-5)=0 | | 3x^2+x^2=23104 | | x(x-19)=0 | | 6m+5n-8(4m-3n)= | | 81a^2-99ab+28b^2= | | y(2y-8)9(2Y+6)=0 | | 68*31x=26*87x | | 68*31x=700*852x | | 15a-15= | | -4n+1=1 | | 3v-5=-26 | | -3x+1=-11 | | 26x^2+40x+16= | | 12x^2+x-35=0 | | 2345*4577x=4567*1234x | | -4n-2=-2 | | -3x+6+5=-4 | | 468*5795x=79 | | -n^2+2n+63=0 |

Equations solver categories