2m^2+m-5=0

Simple and best practice solution for 2m^2+m-5=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 2m^2+m-5=0 equation:


Simplifying
2m2 + m + -5 = 0

Reorder the terms:
-5 + m + 2m2 = 0

Solving
-5 + m + 2m2 = 0

Solving for variable 'm'.

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

Divide each side by '2'.
-2.5 + 0.5m + m2 = 0

Move the constant term to the right:

Add '2.5' to each side of the equation.
-2.5 + 0.5m + 2.5 + m2 = 0 + 2.5

Reorder the terms:
-2.5 + 2.5 + 0.5m + m2 = 0 + 2.5

Combine like terms: -2.5 + 2.5 = 0.0
0.0 + 0.5m + m2 = 0 + 2.5
0.5m + m2 = 0 + 2.5

Combine like terms: 0 + 2.5 = 2.5
0.5m + m2 = 2.5

The m term is m.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
0.5m + 0.25 + m2 = 2.5 + 0.25

Reorder the terms:
0.25 + 0.5m + m2 = 2.5 + 0.25

Combine like terms: 2.5 + 0.25 = 2.75
0.25 + 0.5m + m2 = 2.75

Factor a perfect square on the left side:
(m + 0.5)(m + 0.5) = 2.75

Calculate the square root of the right side: 1.658312395

Break this problem into two subproblems by setting 
(m + 0.5) equal to 1.658312395 and -1.658312395.

Subproblem 1

m + 0.5 = 1.658312395 Simplifying m + 0.5 = 1.658312395 Reorder the terms: 0.5 + m = 1.658312395 Solving 0.5 + m = 1.658312395 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + m = 1.658312395 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + m = 1.658312395 + -0.5 m = 1.658312395 + -0.5 Combine like terms: 1.658312395 + -0.5 = 1.158312395 m = 1.158312395 Simplifying m = 1.158312395

Subproblem 2

m + 0.5 = -1.658312395 Simplifying m + 0.5 = -1.658312395 Reorder the terms: 0.5 + m = -1.658312395 Solving 0.5 + m = -1.658312395 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + m = -1.658312395 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + m = -1.658312395 + -0.5 m = -1.658312395 + -0.5 Combine like terms: -1.658312395 + -0.5 = -2.158312395 m = -2.158312395 Simplifying m = -2.158312395

Solution

The solution to the problem is based on the solutions from the subproblems. m = {1.158312395, -2.158312395}

See similar equations:

| 2(n+.3)=1.5n+1+.5n-.3 | | 8+10x=5(2x+2) | | (x^6)(x+3)-112=0 | | 16t^2-7t=17t-9 | | s=s+s-p | | 4(x+3)=11 | | 90-x=9 | | 4y-3+y+29=8y+30-5y | | -2(p-3)=-4p+12 | | 3-2(7n+6)=3(-4n-7) | | 8+2t-3=7t+13-3t | | 2(x+4-6)=x+2(x+2)-25 | | 4x+1=x-12 | | -6+4(1-4n)=-6(2n+5) | | 5x-9x+4=2x+6 | | -3=2y-35 | | 6.5(z-2)=-2.5(3z+3)-6.5 | | 2(p-6)-6(1+2p)=-5p+p | | 5(2m-5)=3(3m-8) | | -2(2x)=x+64 | | .3x+4=.6666666667 | | 0=-2t^2+4t+1 | | 4(x+1)=4+8(1+x) | | 27=3c-18-6c | | 4r+7=46r+14 | | x^2+2x=64 | | 15x^2-4x+1=0 | | a(x+5)=-4 | | -7(v-8)=v-6(v-7) | | r-2=3 | | -5x+x=4(x+6)-6(x+1) | | 2(x-2)=x+2(x+2)-21 |

Equations solver categories