k^2-16k+64=8

Simple and best practice solution for k^2-16k+64=8 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^2-16k+64=8 equation:


Simplifying
k2 + -16k + 64 = 8

Reorder the terms:
64 + -16k + k2 = 8

Solving
64 + -16k + k2 = 8

Solving for variable 'k'.

Reorder the terms:
64 + -8 + -16k + k2 = 8 + -8

Combine like terms: 64 + -8 = 56
56 + -16k + k2 = 8 + -8

Combine like terms: 8 + -8 = 0
56 + -16k + k2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-56' to each side of the equation.
56 + -16k + -56 + k2 = 0 + -56

Reorder the terms:
56 + -56 + -16k + k2 = 0 + -56

Combine like terms: 56 + -56 = 0
0 + -16k + k2 = 0 + -56
-16k + k2 = 0 + -56

Combine like terms: 0 + -56 = -56
-16k + k2 = -56

The k term is -16k.  Take half its coefficient (-8).
Square it (64) and add it to both sides.

Add '64' to each side of the equation.
-16k + 64 + k2 = -56 + 64

Reorder the terms:
64 + -16k + k2 = -56 + 64

Combine like terms: -56 + 64 = 8
64 + -16k + k2 = 8

Factor a perfect square on the left side:
(k + -8)(k + -8) = 8

Calculate the square root of the right side: 2.828427125

Break this problem into two subproblems by setting 
(k + -8) equal to 2.828427125 and -2.828427125.

Subproblem 1

k + -8 = 2.828427125 Simplifying k + -8 = 2.828427125 Reorder the terms: -8 + k = 2.828427125 Solving -8 + k = 2.828427125 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + k = 2.828427125 + 8 Combine like terms: -8 + 8 = 0 0 + k = 2.828427125 + 8 k = 2.828427125 + 8 Combine like terms: 2.828427125 + 8 = 10.828427125 k = 10.828427125 Simplifying k = 10.828427125

Subproblem 2

k + -8 = -2.828427125 Simplifying k + -8 = -2.828427125 Reorder the terms: -8 + k = -2.828427125 Solving -8 + k = -2.828427125 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + k = -2.828427125 + 8 Combine like terms: -8 + 8 = 0 0 + k = -2.828427125 + 8 k = -2.828427125 + 8 Combine like terms: -2.828427125 + 8 = 5.171572875 k = 5.171572875 Simplifying k = 5.171572875

Solution

The solution to the problem is based on the solutions from the subproblems. k = {10.828427125, 5.171572875}

See similar equations:

| 3X+Y+24=0 | | -67+8x=59+x | | .5(-12+x)=3.5 | | x^4-4x^3-x^2+10x-24=0 | | X-9t=6 | | 7a-3=+6a | | p+4p-5=5 | | -3x-20=9-4x | | 7f+g=5-g | | 3X+Y-24=0 | | -2(5+6p)=-82 | | 21x=274 | | 6.75+1.25x=31.75 | | 10y+5-8y+10= | | b^2-16b+63=0 | | y-z=2 | | X^2+2=-3x+12 | | 5-2y-12=y+9 | | 0=3x^2+2x-4 | | 5(2x+3)=4(2-3x)+2(2+3x) | | 4(-6-5h)+2h= | | 9x-63=3x+93 | | 5(-2+3x)=-85 | | t-2s=5 | | 1/4a-4=4 | | 55.00+8.50x=123 | | 30+2+5n=70 | | -2x^2+30x-72=0 | | .05n+.10(n+9)+.25(n+30)=10.00 | | 5(y-2)+6=y+8 | | 13(4x)=52(13-x) | | x^2+16=6 |

Equations solver categories