m^2-6m-18=0

Simple and best practice solution for m^2-6m-18=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-18=0 equation:


Simplifying
m2 + -6m + -18 = 0

Reorder the terms:
-18 + -6m + m2 = 0

Solving
-18 + -6m + m2 = 0

Solving for variable 'm'.

Begin completing the square.

Move the constant term to the right:

Add '18' to each side of the equation.
-18 + -6m + 18 + m2 = 0 + 18

Reorder the terms:
-18 + 18 + -6m + m2 = 0 + 18

Combine like terms: -18 + 18 = 0
0 + -6m + m2 = 0 + 18
-6m + m2 = 0 + 18

Combine like terms: 0 + 18 = 18
-6m + m2 = 18

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 = 18 + 9

Reorder the terms:
9 + -6m + m2 = 18 + 9

Combine like terms: 18 + 9 = 27
9 + -6m + m2 = 27

Factor a perfect square on the left side:
(m + -3)(m + -3) = 27

Calculate the square root of the right side: 5.196152423

Break this problem into two subproblems by setting 
(m + -3) equal to 5.196152423 and -5.196152423.

Subproblem 1

m + -3 = 5.196152423 Simplifying m + -3 = 5.196152423 Reorder the terms: -3 + m = 5.196152423 Solving -3 + m = 5.196152423 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 = 5.196152423 + 3 Combine like terms: -3 + 3 = 0 0 + m = 5.196152423 + 3 m = 5.196152423 + 3 Combine like terms: 5.196152423 + 3 = 8.196152423 m = 8.196152423 Simplifying m = 8.196152423

Subproblem 2

m + -3 = -5.196152423 Simplifying m + -3 = -5.196152423 Reorder the terms: -3 + m = -5.196152423 Solving -3 + m = -5.196152423 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 = -5.196152423 + 3 Combine like terms: -3 + 3 = 0 0 + m = -5.196152423 + 3 m = -5.196152423 + 3 Combine like terms: -5.196152423 + 3 = -2.196152423 m = -2.196152423 Simplifying m = -2.196152423

Solution

The solution to the problem is based on the solutions from the subproblems. m = {8.196152423, -2.196152423}

See similar equations:

| (a/2a^4b^2)^4 | | -106+4x=-9x+63 | | n+6/2-n/3=4 | | 5a+10(a+15)+25(a+8)=670 | | 35p+25=40p | | 3(y+4)+3(y+4)=48 | | -5x+9+7x=2 | | 3-0.5x=1 | | 4(x+3)+2(x-1)=-20 | | 6x^2-x^2+7x-2= | | 72=6x+4(-2x+13) | | n-1/7=-3 | | -(2z-2)+1=3+(2z+2) | | -49+x=41-4x | | (6b-10)(4b-5)= | | k/12=7 | | 15x+132=-96+3x | | x-7/7=11 | | -52+4x=17+x | | -3x^2-8x+12=0 | | 500000-150000/500000 | | b^2+2=83 | | log2/log1.1 | | x+x(10)=495 | | tan(5x)=-1 | | 0.3=500000-x/500000 | | 4.7+7.7=2.5 | | (11x^2)(4x^3)= | | 3(10)=3x+2x+9+7 | | 2x^2=58 | | -50-4x=46-12x | | x(2x+1)=3x+4 |

Equations solver categories