k^2+8k+36=0

Simple and best practice solution for k^2+8k+36=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+36=0 equation:


Simplifying
k2 + 8k + 36 = 0

Reorder the terms:
36 + 8k + k2 = 0

Solving
36 + 8k + k2 = 0

Solving for variable 'k'.

Begin completing the square.

Move the constant term to the right:

Add '-36' to each side of the equation.
36 + 8k + -36 + k2 = 0 + -36

Reorder the terms:
36 + -36 + 8k + k2 = 0 + -36

Combine like terms: 36 + -36 = 0
0 + 8k + k2 = 0 + -36
8k + k2 = 0 + -36

Combine like terms: 0 + -36 = -36
8k + k2 = -36

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 = -36 + 16

Reorder the terms:
16 + 8k + k2 = -36 + 16

Combine like terms: -36 + 16 = -20
16 + 8k + k2 = -20

Factor a perfect square on the left side:
(k + 4)(k + 4) = -20

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| -4w+20=88 | | 5x^2=-15 | | (7+9)+y=75 | | (7+9)+y= | | 2(5-3(4-7))= | | 8=1*6+b | | 5.3+1.2n=1.94 | | 3x=1x+6 | | x+4-3=5x+1 | | c^2-1=0 | | (x-6)(x-6)+(x+8)(x+8)=(2x-26)(2x-26) | | 5x-8=9-3x | | 2n+5=4n+8 | | 3x+2x+5+3=7 | | -13=-5(4x-2x) | | 5r^2+22r+21=0 | | 12x-7x=4+5 | | 4x-3=2x+1 | | 2(9+h)=20 | | 8x+15=0 | | 1.5x+9=3x+3 | | 5x+6+2x=-7x-10 | | 50=3x+4y | | .67z=3z-.8 | | x+5+x=-1 | | 5x+3=7x-1 | | 1.5x+9=3-3 | | 4x+18=70 | | 5x+15=4x+45 | | 12-3x=13-5x | | 2x+x=4+3 | | -6z-18=-132 |

Equations solver categories