2x-x^2-255=0

Simple and best practice solution for 2x-x^2-255=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 2x-x^2-255=0 equation:


Simplifying
2x + -1x2 + -255 = 0

Reorder the terms:
-255 + 2x + -1x2 = 0

Solving
-255 + 2x + -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'.
255 + -2x + x2 = 0

Move the constant term to the right:

Add '-255' to each side of the equation.
255 + -2x + -255 + x2 = 0 + -255

Reorder the terms:
255 + -255 + -2x + x2 = 0 + -255

Combine like terms: 255 + -255 = 0
0 + -2x + x2 = 0 + -255
-2x + x2 = 0 + -255

Combine like terms: 0 + -255 = -255
-2x + x2 = -255

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 = -255 + 1

Reorder the terms:
1 + -2x + x2 = -255 + 1

Combine like terms: -255 + 1 = -254
1 + -2x + x2 = -254

Factor a perfect square on the left side:
(x + -1)(x + -1) = -254

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 6y-2-9y=4 | | 0=2x^2+19x+35 | | 2(r+3)=4a+37 | | 2/43x+4/43=6/43 | | 0.50(x+4)+3=2x(4.50+.75) | | -3(x+4)=2(x+4) | | 2x-12x+21=-9 | | 2-0/3.8-4 | | 4.24/p=10.6/14.8 | | 14/3x=-30 | | 3a-7=7a-3 | | 7-x=3x-13 | | 5x+3y=-23 | | 0=4x^2+20x+21 | | -1/4X=-1/8 | | 3/2N=0 | | Y+8/2=-1/2 | | y+3y+2(y+3)=15 | | 4(x-3)+47=-3x | | 1500=700+3f | | 4y-8x=4 | | 16x+15=8x+34 | | 6/x=8 | | P/7=-15 | | -4m+16=-116 | | Y-3/5=-4 | | 3-8c=34 | | -4*m+16=116 | | 4x-8y=-16 | | 14m=2075 | | 1=4x^3+4x | | 2x-4=6x+12 |

Equations solver categories