-x^2+2x=-56

Simple and best practice solution for -x^2+2x=-56 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=-56 equation:


Simplifying
-1x2 + 2x = -56

Reorder the terms:
2x + -1x2 = -56

Solving
2x + -1x2 = -56

Solving for variable 'x'.

Reorder the terms:
56 + 2x + -1x2 = -56 + 56

Combine like terms: -56 + 56 = 0
56 + 2x + -1x2 = 0

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

Divide each side by '-1'.
-56 + -2x + x2 = 0

Move the constant term to the right:

Add '56' to each side of the equation.
-56 + -2x + 56 + x2 = 0 + 56

Reorder the terms:
-56 + 56 + -2x + x2 = 0 + 56

Combine like terms: -56 + 56 = 0
0 + -2x + x2 = 0 + 56
-2x + x2 = 0 + 56

Combine like terms: 0 + 56 = 56
-2x + x2 = 56

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 = 56 + 1

Reorder the terms:
1 + -2x + x2 = 56 + 1

Combine like terms: 56 + 1 = 57
1 + -2x + x2 = 57

Factor a perfect square on the left side:
(x + -1)(x + -1) = 57

Calculate the square root of the right side: 7.549834435

Break this problem into two subproblems by setting 
(x + -1) equal to 7.549834435 and -7.549834435.

Subproblem 1

x + -1 = 7.549834435 Simplifying x + -1 = 7.549834435 Reorder the terms: -1 + x = 7.549834435 Solving -1 + x = 7.549834435 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 = 7.549834435 + 1 Combine like terms: -1 + 1 = 0 0 + x = 7.549834435 + 1 x = 7.549834435 + 1 Combine like terms: 7.549834435 + 1 = 8.549834435 x = 8.549834435 Simplifying x = 8.549834435

Subproblem 2

x + -1 = -7.549834435 Simplifying x + -1 = -7.549834435 Reorder the terms: -1 + x = -7.549834435 Solving -1 + x = -7.549834435 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 = -7.549834435 + 1 Combine like terms: -1 + 1 = 0 0 + x = -7.549834435 + 1 x = -7.549834435 + 1 Combine like terms: -7.549834435 + 1 = -6.549834435 x = -6.549834435 Simplifying x = -6.549834435

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.549834435, -6.549834435}

See similar equations:

| -48-35=x | | 4*(x+1)=2*(x-3) | | 13-x=-35 | | -25+38=x | | -35-133=x | | -98-35=x | | 63-x=-35 | | 25+38=x | | -98+123=x | | 20x-2=35x+1 | | -35-x=-98 | | 6x-3y=-36 | | -3+3=-3(2x+8) | | 5(x-3)=39+2x | | -8+5x+x=40 | | -48-21=x | | 5a-(8-1a)=4a-10 | | -21-69=x | | 40t-40t^2= | | -48-x=-69 | | -84+36=x | | -3+3=-3(2y+8) | | 4/3x-2 | | y=180x-360 | | 3+72=x | | x=180y-360 | | x=180y-360fory | | 6x+10=4x+19 | | 117-69=x | | -117-48=x | | -69-48=x | | 36-84=x |

Equations solver categories