9k^2+12k=45

Simple and best practice solution for 9k^2+12k=45 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 9k^2+12k=45 equation:


Simplifying
9k2 + 12k = 45

Reorder the terms:
12k + 9k2 = 45

Solving
12k + 9k2 = 45

Solving for variable 'k'.

Reorder the terms:
-45 + 12k + 9k2 = 45 + -45

Combine like terms: 45 + -45 = 0
-45 + 12k + 9k2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-15 + 4k + 3k2) = 0

Factor a trinomial.
3((-3 + -1k)(5 + -3k)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-3 + -1k)' equal to zero and attempt to solve: Simplifying -3 + -1k = 0 Solving -3 + -1k = 0 Move all terms containing k to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + -1k = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -1k = 0 + 3 -1k = 0 + 3 Combine like terms: 0 + 3 = 3 -1k = 3 Divide each side by '-1'. k = -3 Simplifying k = -3

Subproblem 2

Set the factor '(5 + -3k)' equal to zero and attempt to solve: Simplifying 5 + -3k = 0 Solving 5 + -3k = 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 + -3k = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -3k = 0 + -5 -3k = 0 + -5 Combine like terms: 0 + -5 = -5 -3k = -5 Divide each side by '-3'. k = 1.666666667 Simplifying k = 1.666666667

Solution

k = {-3, 1.666666667}

See similar equations:

| (2x+8)(2x+7)=58 | | (9x-1)-(4x+7)=7 | | 5-x=-7x+23 | | 13x+7=10x+10 | | 3x+2y=1.49 | | 7x=1/7 | | (2x+7)(10x+13)=y | | 15=2m/3-1 | | 2x^2-4x-2x=0 | | -3-k/5=-10 | | g^2+32-40=0 | | 3xy+3yx=0 | | (2/3)^4/(3/4)^2 | | 39/8 | | 11x+15=5x+51 | | 69/20 | | Y^2-2y-27=-4y-3 | | x^3-6x^2-4x+8=0 | | 5s/6+7=-3 | | 7y+3y=180 | | 12-(x+3)=2x(-5+x) | | 7x+4=2x+16 | | 9k+4=49 | | U=7(3n+33)+8(n+1) | | -12=r/8-5 | | Y=.5x-8 | | e/4+8=1 | | -P-11-4= | | 3y+3(y-6)=8y-4(y+10) | | 16x+35=9x+21 | | b/6-16=-9 | | 3(2x+5)=13x+7-7x+8 |

Equations solver categories