m^2+6m-9=0

Simple and best practice solution for m^2+6m-9=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 m^2+6m-9=0 equation:


Simplifying
m2 + 6m + -9 = 0

Reorder the terms:
-9 + 6m + m2 = 0

Solving
-9 + 6m + m2 = 0

Solving for variable 'm'.

Begin completing the square.

Move the constant term to the right:

Add '9' to each side of the equation.
-9 + 6m + 9 + m2 = 0 + 9

Reorder the terms:
-9 + 9 + 6m + m2 = 0 + 9

Combine like terms: -9 + 9 = 0
0 + 6m + m2 = 0 + 9
6m + m2 = 0 + 9

Combine like terms: 0 + 9 = 9
6m + m2 = 9

The m term is 6m.  Take half its coefficient (3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
6m + 9 + m2 = 9 + 9

Reorder the terms:
9 + 6m + m2 = 9 + 9

Combine like terms: 9 + 9 = 18
9 + 6m + m2 = 18

Factor a perfect square on the left side:
(m + 3)(m + 3) = 18

Calculate the square root of the right side: 4.242640687

Break this problem into two subproblems by setting 
(m + 3) equal to 4.242640687 and -4.242640687.

Subproblem 1

m + 3 = 4.242640687 Simplifying m + 3 = 4.242640687 Reorder the terms: 3 + m = 4.242640687 Solving 3 + m = 4.242640687 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + m = 4.242640687 + -3 Combine like terms: 3 + -3 = 0 0 + m = 4.242640687 + -3 m = 4.242640687 + -3 Combine like terms: 4.242640687 + -3 = 1.242640687 m = 1.242640687 Simplifying m = 1.242640687

Subproblem 2

m + 3 = -4.242640687 Simplifying m + 3 = -4.242640687 Reorder the terms: 3 + m = -4.242640687 Solving 3 + m = -4.242640687 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + m = -4.242640687 + -3 Combine like terms: 3 + -3 = 0 0 + m = -4.242640687 + -3 m = -4.242640687 + -3 Combine like terms: -4.242640687 + -3 = -7.242640687 m = -7.242640687 Simplifying m = -7.242640687

Solution

The solution to the problem is based on the solutions from the subproblems. m = {1.242640687, -7.242640687}

See similar equations:

| x^2-63=2x+132 | | 2a^2-3b^2+c^2=0 | | 2a^203b^2+c^2=0 | | y-4+-8= | | 20+9x=12+5x | | 21x=231 | | 21x=144 | | 9x+20=5x+12 | | P=5x+5x+x+x | | 15=0.25+3 | | 9x+12=5x+12 | | 12x=144 | | (2x+5)(x+7)=180 | | 3(b-4)+6=5(b-1)+1 | | (x+4)(x-3)=18 | | -8+3=-125 | | -3d-9=12 | | (10x+24)+(5x+6)=180 | | 6(2x-7)=2(6x+1) | | m-9=2m+4 | | x^4+13x^2+36=0 | | (10x+24)=(5x+6) | | 2x-7x+12=0 | | 4t=-46 | | 5.2q-1.7-5.1q=-0.9q-5.6 | | -7y+1=-8y+4 | | 2x-9=-27 | | 1-7x=85 | | -5.73c=97.41 | | 2x^2+8x+8=0 | | n*3=39 | | 0.49x=6.277 |

Equations solver categories