k^2-8k+20=0

Simple and best practice solution for k^2-8k+20=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 k^2-8k+20=0 equation:


Simplifying
k2 + -8k + 20 = 0

Reorder the terms:
20 + -8k + k2 = 0

Solving
20 + -8k + k2 = 0

Solving for variable 'k'.

Begin completing the square.

Move the constant term to the right:

Add '-20' to each side of the equation.
20 + -8k + -20 + k2 = 0 + -20

Reorder the terms:
20 + -20 + -8k + k2 = 0 + -20

Combine like terms: 20 + -20 = 0
0 + -8k + k2 = 0 + -20
-8k + k2 = 0 + -20

Combine like terms: 0 + -20 = -20
-8k + k2 = -20

The k term is -8k.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8k + 16 + k2 = -20 + 16

Reorder the terms:
16 + -8k + k2 = -20 + 16

Combine like terms: -20 + 16 = -4
16 + -8k + k2 = -4

Factor a perfect square on the left side:
(k + -4)(k + -4) = -4

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 2*X+2(X+48)=184 | | 99=-x+240 | | 187=-u+100 | | 8-x=13-20 | | -5v/9=35 | | -2w=10/3 | | -6/5w=12 | | 7/5w=28 | | t^2+2t-9=0 | | 8v=16/3 | | y^2+200y-3=0 | | 4c+2=2c | | 10=-3x+8-12 | | 4c+2=2c+8; | | P+8forp=6 | | x^2-33x+252=0 | | 2=(1+x)*8 | | 2=(1+x)8 | | x^4-4x^3-2x^2-12x-15=0 | | (X^2)/((x^2)-9) | | 31=-1/-6n | | 2=8y-10 | | 23= | | -1/-6n | | -2x(x-2)-4x=3(x-1)-9x | | x^2-13x-18=0 | | 15x+22.5=82.5 | | -10(-2a+3)-2(8+10a)=10 | | -6+5x=18 | | 8(n-5)+4=7-(-2+n) | | 2x+154=8x-14 | | 2x-3x-28=0 |

Equations solver categories