k^2-4k-45=0

Simple and best practice solution for k^2-4k-45=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-45=0 equation:


Simplifying
k2 + -4k + -45 = 0

Reorder the terms:
-45 + -4k + k2 = 0

Solving
-45 + -4k + k2 = 0

Solving for variable 'k'.

Factor a trinomial.
(-5 + -1k)(9 + -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 '(9 + -1k)' equal to zero and attempt to solve: Simplifying 9 + -1k = 0 Solving 9 + -1k = 0 Move all terms containing k to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -1k = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1k = 0 + -9 -1k = 0 + -9 Combine like terms: 0 + -9 = -9 -1k = -9 Divide each side by '-1'. k = 9 Simplifying k = 9

Solution

k = {-5, 9}

See similar equations:

| 2x+5(2+3x)=3x+2(14+12x)+8 | | -18-22=10x | | 14x=63-7x | | (x)2=200+(x-200)4 | | 4h-h=35+25 | | 7x-12y=4 | | -11x=3x-28 | | -2a^2+54a= | | (5+2x)*(3x-5)=0 | | -2a^2+54=0 | | 6x^3-17x^2+5x= | | -2a(a+27)=0 | | 4a^3+9a^2-4+2a^3-9a+9= | | 2x-8(7-x)=18 | | 22m+23=24m-25 | | x+-0.05x+1=n | | x+-0.05x+1= | | 7x+1=3(6x-7) | | 2s+6=s+13 | | 10x^2-6=7x | | x+-0.05x+1=1+11.95x | | (5-3x)(2+4x)= | | 6m+4=5m-1 | | -2[8-5(2-3x)-7x]=4(x+9) | | x+-0.05x+11.95x=1-1 | | X=(2x^2+3x-6)+(x^2-18x+6) | | 4x^2+3x-6=0 | | 6x^2-6x+10=2x^2-2x+25 | | x-0.5(0.1x-2)=1+11.95x | | -9x+3x=-24 | | 8x(3x+2)=-5(2-x)+3 | | 1270=.15x |

Equations solver categories