K^2-3K-25=

Simple and best practice solution for K^2-3K-25= 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^2-3K-25= equation:


Simplifying
K2 + -3K + -25 = 0

Reorder the terms:
-25 + -3K + K2 = 0

Solving
-25 + -3K + K2 = 0

Solving for variable 'K'.

Begin completing the square.

Move the constant term to the right:

Add '25' to each side of the equation.
-25 + -3K + 25 + K2 = 0 + 25

Reorder the terms:
-25 + 25 + -3K + K2 = 0 + 25

Combine like terms: -25 + 25 = 0
0 + -3K + K2 = 0 + 25
-3K + K2 = 0 + 25

Combine like terms: 0 + 25 = 25
-3K + K2 = 25

The K term is -3K.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3K + 2.25 + K2 = 25 + 2.25

Reorder the terms:
2.25 + -3K + K2 = 25 + 2.25

Combine like terms: 25 + 2.25 = 27.25
2.25 + -3K + K2 = 27.25

Factor a perfect square on the left side:
(K + -1.5)(K + -1.5) = 27.25

Calculate the square root of the right side: 5.220153254

Break this problem into two subproblems by setting 
(K + -1.5) equal to 5.220153254 and -5.220153254.

Subproblem 1

K + -1.5 = 5.220153254 Simplifying K + -1.5 = 5.220153254 Reorder the terms: -1.5 + K = 5.220153254 Solving -1.5 + K = 5.220153254 Solving for variable 'K'. Move all terms containing K to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + K = 5.220153254 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + K = 5.220153254 + 1.5 K = 5.220153254 + 1.5 Combine like terms: 5.220153254 + 1.5 = 6.720153254 K = 6.720153254 Simplifying K = 6.720153254

Subproblem 2

K + -1.5 = -5.220153254 Simplifying K + -1.5 = -5.220153254 Reorder the terms: -1.5 + K = -5.220153254 Solving -1.5 + K = -5.220153254 Solving for variable 'K'. Move all terms containing K to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + K = -5.220153254 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + K = -5.220153254 + 1.5 K = -5.220153254 + 1.5 Combine like terms: -5.220153254 + 1.5 = -3.720153254 K = -3.720153254 Simplifying K = -3.720153254

Solution

The solution to the problem is based on the solutions from the subproblems. K = {6.720153254, -3.720153254}

See similar equations:

| 23x=5 | | a/5-3=-12 | | a=.5(11+15)*6.9 | | (3h+2)(6h-5)=0 | | V^2-6V-27= | | 3(15+x)=60 | | 18=(8+.5)(w) | | V^2-15V+54= | | 6x+14x-28=-8 | | 25x-10+15=50 | | (5m-2)(m+3)=0 | | (5a^2-6a^3+5a)+(7a^4+2a^3-5a)= | | 0.9t=1+t | | 2x+33=10x-7 | | n^2+7n-18= | | 4x-5(x+1)+9=0 | | 2-3x=26 | | (k-6)(k+8)=0 | | -5+8x+1=3x-59 | | 0.5x+0.6=-10.9-1.8x | | Y=4x^2-12x-9 | | (a+8)(a-2)=0 | | 1.7+0.5x=0.9x-5.1 | | 3x+43=5x-9 | | 68-6x=21x+20 | | y=-x^2+14x-24 | | 12+2y-10=8 | | y=-7(x-1)2+2 | | 7-x=4.1 | | P=145e^10k | | 2-6x=11-7 | | 3(x-5)+6=36 |

Equations solver categories