5k^2+12k-4=0

Simple and best practice solution for 5k^2+12k-4=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 5k^2+12k-4=0 equation:


Simplifying
5k2 + 12k + -4 = 0

Reorder the terms:
-4 + 12k + 5k2 = 0

Solving
-4 + 12k + 5k2 = 0

Solving for variable 'k'.

Begin completing the square.  Divide all terms by
5 the coefficient of the squared term: 

Divide each side by '5'.
-0.8 + 2.4k + k2 = 0

Move the constant term to the right:

Add '0.8' to each side of the equation.
-0.8 + 2.4k + 0.8 + k2 = 0 + 0.8

Reorder the terms:
-0.8 + 0.8 + 2.4k + k2 = 0 + 0.8

Combine like terms: -0.8 + 0.8 = 0.0
0.0 + 2.4k + k2 = 0 + 0.8
2.4k + k2 = 0 + 0.8

Combine like terms: 0 + 0.8 = 0.8
2.4k + k2 = 0.8

The k term is 2.4k.  Take half its coefficient (1.2).
Square it (1.44) and add it to both sides.

Add '1.44' to each side of the equation.
2.4k + 1.44 + k2 = 0.8 + 1.44

Reorder the terms:
1.44 + 2.4k + k2 = 0.8 + 1.44

Combine like terms: 0.8 + 1.44 = 2.24
1.44 + 2.4k + k2 = 2.24

Factor a perfect square on the left side:
(k + 1.2)(k + 1.2) = 2.24

Calculate the square root of the right side: 1.496662955

Break this problem into two subproblems by setting 
(k + 1.2) equal to 1.496662955 and -1.496662955.

Subproblem 1

k + 1.2 = 1.496662955 Simplifying k + 1.2 = 1.496662955 Reorder the terms: 1.2 + k = 1.496662955 Solving 1.2 + k = 1.496662955 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-1.2' to each side of the equation. 1.2 + -1.2 + k = 1.496662955 + -1.2 Combine like terms: 1.2 + -1.2 = 0.0 0.0 + k = 1.496662955 + -1.2 k = 1.496662955 + -1.2 Combine like terms: 1.496662955 + -1.2 = 0.296662955 k = 0.296662955 Simplifying k = 0.296662955

Subproblem 2

k + 1.2 = -1.496662955 Simplifying k + 1.2 = -1.496662955 Reorder the terms: 1.2 + k = -1.496662955 Solving 1.2 + k = -1.496662955 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-1.2' to each side of the equation. 1.2 + -1.2 + k = -1.496662955 + -1.2 Combine like terms: 1.2 + -1.2 = 0.0 0.0 + k = -1.496662955 + -1.2 k = -1.496662955 + -1.2 Combine like terms: -1.496662955 + -1.2 = -2.696662955 k = -2.696662955 Simplifying k = -2.696662955

Solution

The solution to the problem is based on the solutions from the subproblems. k = {0.296662955, -2.696662955}

See similar equations:

| 6x-2=18+2x | | -3(7-4)=-4 | | X+y+9z=-8 | | -1x+-2=1+-2x | | 8x+63=x-21 | | X+6=7.7 | | (-1/3)t=4/3 | | 4/7x-8=-12 | | 19x-6=13x+9 | | 2(3x-3)-4(5x-3)=x(x-3)-x(x+5) | | 3x+2=6x-28 | | (-1/3t=4/3 | | -7(y+2)+3(4y-4)=4(y-3)+8 | | X-61=15 | | A^2=5a+104 | | F(x)=-3x^3-15x^2-12x | | x/-15=-6 | | -36=4w-8 | | 11-2(p+5)=p-5 | | 7x^2+45x+50=0 | | 2(3x-3)-4(5x+3)=x(x-3)-x(x+5) | | 8x-5-11x=9+4x | | 18=(-1/2)y | | 10/1×5/6 | | 3x-11=-23 | | 9(x-1)=9x+11 | | (3x)*(3x)-1=(3x-1)(2x+5) | | 6(y-6)-(y+2)=2 | | V^2-2v+45=5-18v | | F(x)=x^4-8x^2+16 | | -7=u-8 | | 3c-9d+7d+5d= |

Equations solver categories