x^2-4x+400=0

Simple and best practice solution for x^2-4x+400=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^2-4x+400=0 equation:


Simplifying
x2 + -4x + 400 = 0

Reorder the terms:
400 + -4x + x2 = 0

Solving
400 + -4x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-400' to each side of the equation.
400 + -4x + -400 + x2 = 0 + -400

Reorder the terms:
400 + -400 + -4x + x2 = 0 + -400

Combine like terms: 400 + -400 = 0
0 + -4x + x2 = 0 + -400
-4x + x2 = 0 + -400

Combine like terms: 0 + -400 = -400
-4x + x2 = -400

The x term is -4x.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4x + 4 + x2 = -400 + 4

Reorder the terms:
4 + -4x + x2 = -400 + 4

Combine like terms: -400 + 4 = -396
4 + -4x + x2 = -396

Factor a perfect square on the left side:
(x + -2)(x + -2) = -396

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 5x-10y=19 | | 4x^2+25x-2=0 | | 10y=12x+8 | | 2y+3=5-3y | | t^2+4t-60=0 | | 8xa=48 | | x^2-8x+4=90 | | 180=68+2x | | 7+1c=18 | | 0.5x+1.6=3.9 | | 8n-(3n+6)= | | x(1+4)+x(1+2)=2x+12 | | 0.1/x=0.18 | | x+x+x+x=9 | | 1.5B=B | | 4(n+2)(n+5)=230 | | 9y^2-36y+300=0 | | 6x^3+5x^2+3x+2=0 | | (9-v)(5v+7)=0 | | 9x-3=40 | | 2*(10-y)+2y=20 | | 10d+5=4d+47 | | (x)=300(1.02)x | | .65b+4.99=6.94 | | 6(x-4)=-2.4 | | =-6x^2-x+7 | | 2e+1=77 | | 2x-3(2x-3)=0 | | 9(a+3)=65.7 | | 2x+5=11*11*11*11 | | 58=7x-5 | | 2/8+1/5= |

Equations solver categories