9m^2-12m-4=0

Simple and best practice solution for 9m^2-12m-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 9m^2-12m-4=0 equation:


Simplifying
9m2 + -12m + -4 = 0

Reorder the terms:
-4 + -12m + 9m2 = 0

Solving
-4 + -12m + 9m2 = 0

Solving for variable 'm'.

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

Divide each side by '9'.
-0.4444444444 + -1.333333333m + m2 = 0

Move the constant term to the right:

Add '0.4444444444' to each side of the equation.
-0.4444444444 + -1.333333333m + 0.4444444444 + m2 = 0 + 0.4444444444

Reorder the terms:
-0.4444444444 + 0.4444444444 + -1.333333333m + m2 = 0 + 0.4444444444

Combine like terms: -0.4444444444 + 0.4444444444 = 0.0000000000
0.0000000000 + -1.333333333m + m2 = 0 + 0.4444444444
-1.333333333m + m2 = 0 + 0.4444444444

Combine like terms: 0 + 0.4444444444 = 0.4444444444
-1.333333333m + m2 = 0.4444444444

The m term is -1.333333333m.  Take half its coefficient (-0.6666666665).
Square it (0.4444444442) and add it to both sides.

Add '0.4444444442' to each side of the equation.
-1.333333333m + 0.4444444442 + m2 = 0.4444444444 + 0.4444444442

Reorder the terms:
0.4444444442 + -1.333333333m + m2 = 0.4444444444 + 0.4444444442

Combine like terms: 0.4444444444 + 0.4444444442 = 0.8888888886
0.4444444442 + -1.333333333m + m2 = 0.8888888886

Factor a perfect square on the left side:
(m + -0.6666666665)(m + -0.6666666665) = 0.8888888886

Calculate the square root of the right side: 0.942809041

Break this problem into two subproblems by setting 
(m + -0.6666666665) equal to 0.942809041 and -0.942809041.

Subproblem 1

m + -0.6666666665 = 0.942809041 Simplifying m + -0.6666666665 = 0.942809041 Reorder the terms: -0.6666666665 + m = 0.942809041 Solving -0.6666666665 + m = 0.942809041 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '0.6666666665' to each side of the equation. -0.6666666665 + 0.6666666665 + m = 0.942809041 + 0.6666666665 Combine like terms: -0.6666666665 + 0.6666666665 = 0.0000000000 0.0000000000 + m = 0.942809041 + 0.6666666665 m = 0.942809041 + 0.6666666665 Combine like terms: 0.942809041 + 0.6666666665 = 1.6094757075 m = 1.6094757075 Simplifying m = 1.6094757075

Subproblem 2

m + -0.6666666665 = -0.942809041 Simplifying m + -0.6666666665 = -0.942809041 Reorder the terms: -0.6666666665 + m = -0.942809041 Solving -0.6666666665 + m = -0.942809041 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '0.6666666665' to each side of the equation. -0.6666666665 + 0.6666666665 + m = -0.942809041 + 0.6666666665 Combine like terms: -0.6666666665 + 0.6666666665 = 0.0000000000 0.0000000000 + m = -0.942809041 + 0.6666666665 m = -0.942809041 + 0.6666666665 Combine like terms: -0.942809041 + 0.6666666665 = -0.2761423745 m = -0.2761423745 Simplifying m = -0.2761423745

Solution

The solution to the problem is based on the solutions from the subproblems. m = {1.6094757075, -0.2761423745}

See similar equations:

| 20x-15=18x+5 | | x^2*2x=25 | | 6x+1+4x+2+3x-5=x | | 60-30x=20-24x | | 10x+30=10 | | 4(2x+5)2(3x-2)= | | 2(4x+1)=4(2-x) | | 1/3x-2/5x=1 | | (x^1/3*x^1/5)÷((x^1/60)^4) | | v=3*4squared*12 | | 4x+8=6x+7 | | 2x+8+x=29 | | -x^2+14x=40 | | 11(x+8)=9x+11 | | 6x+19y+4+12x-6y-10= | | -4x-11=2x+25 | | x-x=y+y | | 200x-x=89x+30x | | 12m+4y-8m=9y | | 5j=6+j-2y+7 | | Sin3x/x^3 | | (6x-1)(12x-1)(2x-1)(4x-1)=5 | | tg^2x+3tgx=0 | | x^3+13x^2+49=0 | | (x-30)+(x+5)+20=180 | | 4e+3f-2e+6f= | | ln36/6 | | 4x^2+11x+24=0 | | 27x+x^2=506.16 | | 17x+29y=1000 | | -6xz=54 | | 1/196 |

Equations solver categories