k^2-4k-10=0

Simple and best practice solution for k^2-4k-10=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^2-4k-10=0 equation:


Simplifying
k2 + -4k + -10 = 0

Reorder the terms:
-10 + -4k + k2 = 0

Solving
-10 + -4k + k2 = 0

Solving for variable 'k'.

Begin completing the square.

Move the constant term to the right:

Add '10' to each side of the equation.
-10 + -4k + 10 + k2 = 0 + 10

Reorder the terms:
-10 + 10 + -4k + k2 = 0 + 10

Combine like terms: -10 + 10 = 0
0 + -4k + k2 = 0 + 10
-4k + k2 = 0 + 10

Combine like terms: 0 + 10 = 10
-4k + k2 = 10

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

Add '4' to each side of the equation.
-4k + 4 + k2 = 10 + 4

Reorder the terms:
4 + -4k + k2 = 10 + 4

Combine like terms: 10 + 4 = 14
4 + -4k + k2 = 14

Factor a perfect square on the left side:
(k + -2)(k + -2) = 14

Calculate the square root of the right side: 3.741657387

Break this problem into two subproblems by setting 
(k + -2) equal to 3.741657387 and -3.741657387.

Subproblem 1

k + -2 = 3.741657387 Simplifying k + -2 = 3.741657387 Reorder the terms: -2 + k = 3.741657387 Solving -2 + k = 3.741657387 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + k = 3.741657387 + 2 Combine like terms: -2 + 2 = 0 0 + k = 3.741657387 + 2 k = 3.741657387 + 2 Combine like terms: 3.741657387 + 2 = 5.741657387 k = 5.741657387 Simplifying k = 5.741657387

Subproblem 2

k + -2 = -3.741657387 Simplifying k + -2 = -3.741657387 Reorder the terms: -2 + k = -3.741657387 Solving -2 + k = -3.741657387 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + k = -3.741657387 + 2 Combine like terms: -2 + 2 = 0 0 + k = -3.741657387 + 2 k = -3.741657387 + 2 Combine like terms: -3.741657387 + 2 = -1.741657387 k = -1.741657387 Simplifying k = -1.741657387

Solution

The solution to the problem is based on the solutions from the subproblems. k = {5.741657387, -1.741657387}

See similar equations:

| 6-26=5a | | -72=9n | | 12=6-9y | | 7z=0 | | 4x^4+7x^2-36=0 | | 3b=33 | | -45=-15s | | 49=7n | | k^2-12k+27=0 | | 8-8=5y-4y | | -16m+8m=17-89 | | p^2-4p-45=0 | | -r=3 | | p^2-4p-54=0 | | 8=-n | | 3m^2+6m+1=0 | | 2x=-7+9 | | 9t-13t=20 | | -16x=304 | | 15t=105 | | -1+7-6=-4a+5a | | -5+7=y-5 | | 5x(2x+3)= | | c-6=-5+1 | | 6m^2+12m+2=0 | | -5+(-4)= | | 4w-3w+4=-2+6 | | -10+(-10)= | | 5p-4p=-7+10 | | x^4-2x-40=0 | | 2(5z-1)-5(z+6)=3(z+1) | | 7+5(x-1)=5-5(x-3) |

Equations solver categories