8k+k^2=2

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


Simplifying
8k + k2 = 2

Solving
8k + k2 = 2

Solving for variable 'k'.

Reorder the terms:
-2 + 8k + k2 = 2 + -2

Combine like terms: 2 + -2 = 0
-2 + 8k + k2 = 0

Begin completing the square.

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + 8k + 2 + k2 = 0 + 2

Reorder the terms:
-2 + 2 + 8k + k2 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + 8k + k2 = 0 + 2
8k + k2 = 0 + 2

Combine like terms: 0 + 2 = 2
8k + k2 = 2

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 = 2 + 16

Reorder the terms:
16 + 8k + k2 = 2 + 16

Combine like terms: 2 + 16 = 18
16 + 8k + k2 = 18

Factor a perfect square on the left side:
(k + 4)(k + 4) = 18

Calculate the square root of the right side: 4.242640687

Break this problem into two subproblems by setting 
(k + 4) equal to 4.242640687 and -4.242640687.

Subproblem 1

k + 4 = 4.242640687 Simplifying k + 4 = 4.242640687 Reorder the terms: 4 + k = 4.242640687 Solving 4 + k = 4.242640687 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + k = 4.242640687 + -4 Combine like terms: 4 + -4 = 0 0 + k = 4.242640687 + -4 k = 4.242640687 + -4 Combine like terms: 4.242640687 + -4 = 0.242640687 k = 0.242640687 Simplifying k = 0.242640687

Subproblem 2

k + 4 = -4.242640687 Simplifying k + 4 = -4.242640687 Reorder the terms: 4 + k = -4.242640687 Solving 4 + k = -4.242640687 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + k = -4.242640687 + -4 Combine like terms: 4 + -4 = 0 0 + k = -4.242640687 + -4 k = -4.242640687 + -4 Combine like terms: -4.242640687 + -4 = -8.242640687 k = -8.242640687 Simplifying k = -8.242640687

Solution

The solution to the problem is based on the solutions from the subproblems. k = {0.242640687, -8.242640687}

See similar equations:

| -2m^4+3m^2+5=0 | | 5n+2+11n+2=180 | | 12+3X=56+34 | | 12+X=56+34 | | 5(16x)-9=41 | | 2x+5(-3)=19 | | 2(-3)+5=19 | | y=-3x^2-30x+5 | | 2x+5(3x+14)=19 | | Log(8x)+log(x+2)=1 | | -3y^2-30y+5=x | | X=-3y^2-30y+5 | | 4x-1-3x=4x+5 | | -6m=288 | | 161=-7(8k+1) | | 7y+x=28 | | -16t^2+32t+240-32=0 | | ln(x^2-3x+6)-ln(x+1)=lnx | | -x^2-16x+52=0 | | X-.3x=13.30 | | (8n^3+5n)-(-9n^3-3n+8)= | | 6(z+4)-3z-20= | | 9x+x-3x-5=35 | | -1(16t^2-16t-464)=0 | | 4.6a-9.6=-3.16 | | 15n-13+9n+1=180 | | x(5x-8)-2(5x-8)= | | 3x-56=67-41+6-98x | | 5x+40=79+8 | | .82x=14000 | | 2x+1.4=8.8 | | .6x=59000 |

Equations solver categories