8m^2-3m-18=0

Simple and best practice solution for 8m^2-3m-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 8m^2-3m-18=0 equation:


Simplifying
8m2 + -3m + -18 = 0

Reorder the terms:
-18 + -3m + 8m2 = 0

Solving
-18 + -3m + 8m2 = 0

Solving for variable 'm'.

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

Divide each side by '8'.
-2.25 + -0.375m + m2 = 0

Move the constant term to the right:

Add '2.25' to each side of the equation.
-2.25 + -0.375m + 2.25 + m2 = 0 + 2.25

Reorder the terms:
-2.25 + 2.25 + -0.375m + m2 = 0 + 2.25

Combine like terms: -2.25 + 2.25 = 0.00
0.00 + -0.375m + m2 = 0 + 2.25
-0.375m + m2 = 0 + 2.25

Combine like terms: 0 + 2.25 = 2.25
-0.375m + m2 = 2.25

The m term is -0.375m.  Take half its coefficient (-0.1875).
Square it (0.03515625) and add it to both sides.

Add '0.03515625' to each side of the equation.
-0.375m + 0.03515625 + m2 = 2.25 + 0.03515625

Reorder the terms:
0.03515625 + -0.375m + m2 = 2.25 + 0.03515625

Combine like terms: 2.25 + 0.03515625 = 2.28515625
0.03515625 + -0.375m + m2 = 2.28515625

Factor a perfect square on the left side:
(m + -0.1875)(m + -0.1875) = 2.28515625

Calculate the square root of the right side: 1.511673328

Break this problem into two subproblems by setting 
(m + -0.1875) equal to 1.511673328 and -1.511673328.

Subproblem 1

m + -0.1875 = 1.511673328 Simplifying m + -0.1875 = 1.511673328 Reorder the terms: -0.1875 + m = 1.511673328 Solving -0.1875 + m = 1.511673328 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '0.1875' to each side of the equation. -0.1875 + 0.1875 + m = 1.511673328 + 0.1875 Combine like terms: -0.1875 + 0.1875 = 0.0000 0.0000 + m = 1.511673328 + 0.1875 m = 1.511673328 + 0.1875 Combine like terms: 1.511673328 + 0.1875 = 1.699173328 m = 1.699173328 Simplifying m = 1.699173328

Subproblem 2

m + -0.1875 = -1.511673328 Simplifying m + -0.1875 = -1.511673328 Reorder the terms: -0.1875 + m = -1.511673328 Solving -0.1875 + m = -1.511673328 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '0.1875' to each side of the equation. -0.1875 + 0.1875 + m = -1.511673328 + 0.1875 Combine like terms: -0.1875 + 0.1875 = 0.0000 0.0000 + m = -1.511673328 + 0.1875 m = -1.511673328 + 0.1875 Combine like terms: -1.511673328 + 0.1875 = -1.324173328 m = -1.324173328 Simplifying m = -1.324173328

Solution

The solution to the problem is based on the solutions from the subproblems. m = {1.699173328, -1.324173328}

See similar equations:

| -14=x-1 | | 10=22b | | r^3-r^2-4r+6=0 | | 6h^2+4h+14=0 | | X+12=-x+2 | | 5-2=1xs | | 8x-10=8x-12+2x | | X^2+y^2-4x-60=0 | | X=4*y | | 25x=58 | | 3k^2-8k-2=0 | | b-14=-26 | | -18n+16=-14n-16 | | 2/11.40= | | 10(s-3)=-121 | | Y=-2(-4)+6 | | -1/8x-1 | | 15x-8=16x-12 | | -10(x+5)+72=14-14 | | Y=-5(-4)+9 | | X+(X+2)+(X+12)=83 | | 7n^2-10n-12=0 | | 3(f-10)=48 | | 5x-32=x+4 | | 2x^2-x+4x-2= | | y/x=0.5 | | -8y-39=-119 | | 5/3.(-3/4)= | | 10(s-7)=116 | | (x^4y^(-1/3))^(3/2) | | 150=k*10 | | 284=45-x |

Equations solver categories