-x^2+20x-116=0

Simple and best practice solution for -x^2+20x-116=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+20x-116=0 equation:


Simplifying
-1x2 + 20x + -116 = 0

Reorder the terms:
-116 + 20x + -1x2 = 0

Solving
-116 + 20x + -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'.
116 + -20x + x2 = 0

Move the constant term to the right:

Add '-116' to each side of the equation.
116 + -20x + -116 + x2 = 0 + -116

Reorder the terms:
116 + -116 + -20x + x2 = 0 + -116

Combine like terms: 116 + -116 = 0
0 + -20x + x2 = 0 + -116
-20x + x2 = 0 + -116

Combine like terms: 0 + -116 = -116
-20x + x2 = -116

The x term is -20x.  Take half its coefficient (-10).
Square it (100) and add it to both sides.

Add '100' to each side of the equation.
-20x + 100 + x2 = -116 + 100

Reorder the terms:
100 + -20x + x2 = -116 + 100

Combine like terms: -116 + 100 = -16
100 + -20x + x2 = -16

Factor a perfect square on the left side:
(x + -10)(x + -10) = -16

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 2x-3=5x+11 | | -4p+8=7-5p | | 5+2(3x+4)=-11 | | 11.3-7.2f=-3.83 | | 875*.9x=106 | | 2t-8t=3 | | -3(3+r)=-9 | | 14+6x=7x+6x | | 7(2+-m)+-11=-4 | | 4a+14=104-5a | | -2x^2+12x-180=0 | | 0.6x=2500 | | 7x+7=2(x-4) | | x/140=15/100 | | 6(x-4)=-4(x+1)+26 | | (2x+3)(x-3)=11 | | 9x-3=8-4x | | 3x-5-4=14 | | -x/3=-998 | | 1x/21-y=n | | x+6=10x-4 | | -3x^2+60x-408=0 | | 7/4y-5=4 | | 12.73+0.06r=13.48-0.14r | | 3(x-5)-4=14 | | 1x-21y=n | | 2x-24=58 | | 6=6+4k | | -21-8n=-1+6(4-5n) | | X+102=200 | | -8p+3=-19 | | 12k=156 |

Equations solver categories