k^2+4k=5

Simple and best practice solution for k^2+4k=5 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=5 equation:


Simplifying
k2 + 4k = 5

Reorder the terms:
4k + k2 = 5

Solving
4k + k2 = 5

Solving for variable 'k'.

Reorder the terms:
-5 + 4k + k2 = 5 + -5

Combine like terms: 5 + -5 = 0
-5 + 4k + k2 = 0

Factor a trinomial.
(-5 + -1k)(1 + -1k) = 0

Subproblem 1

Set the factor '(-5 + -1k)' equal to zero and attempt to solve: Simplifying -5 + -1k = 0 Solving -5 + -1k = 0 Move all terms containing k to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + -1k = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -1k = 0 + 5 -1k = 0 + 5 Combine like terms: 0 + 5 = 5 -1k = 5 Divide each side by '-1'. k = -5 Simplifying k = -5

Subproblem 2

Set the factor '(1 + -1k)' equal to zero and attempt to solve: Simplifying 1 + -1k = 0 Solving 1 + -1k = 0 Move all terms containing k to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -1k = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -1k = 0 + -1 -1k = 0 + -1 Combine like terms: 0 + -1 = -1 -1k = -1 Divide each side by '-1'. k = 1 Simplifying k = 1

Solution

k = {-5, 1}

See similar equations:

| (7x+9)+(4x)+(x+3)=180 | | 2x-8=62 | | sin^2x=2(cosx-1) | | 7n^2-61n-90=0 | | Axb=38850 | | 0=3x^2+8x+11 | | 5*-6+9-(28-(-9))= | | 2a+3(a+3)=a+3 | | M+4m=7+13 | | 6x+5=-45-6x | | 2a+3a(a-7)=a+3 | | f(x)=x-6x+7 | | y=3x^2-4x | | Y^2+30y+2=y | | 5y^2+8y-13=0 | | (3b^3+8b^2-7)+(2b^3-8b+8)= | | y=x^3-2x^2+x+7 | | 5x(5x+14)=10x-36 | | 10x+10=0 | | X^3+3x^2-23x+1=0 | | y=5+ax+bx^2 | | 3(n-4)=3n | | 180x=180(x-2)+15x(x-2) | | -6v^2-17v-12=0 | | 2(x+2y)=12 | | (2x-5)-(x-6)=80 | | 7y+x=94 | | 5q-6(q-5)+5(p-5)=0 | | X+(9-2x)=17 | | 2(2x-3)-(x+4)=3(x-2)+1 | | (15-z)=20z | | 7=v^2-2*8*2 |

Equations solver categories