2m^2+7m=5

Simple and best practice solution for 2m^2+7m=5 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+7m=5 equation:


Simplifying
2m2 + 7m = 5

Reorder the terms:
7m + 2m2 = 5

Solving
7m + 2m2 = 5

Solving for variable 'm'.

Reorder the terms:
-5 + 7m + 2m2 = 5 + -5

Combine like terms: 5 + -5 = 0
-5 + 7m + 2m2 = 0

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

Divide each side by '2'.
-2.5 + 3.5m + m2 = 0

Move the constant term to the right:

Add '2.5' to each side of the equation.
-2.5 + 3.5m + 2.5 + m2 = 0 + 2.5

Reorder the terms:
-2.5 + 2.5 + 3.5m + m2 = 0 + 2.5

Combine like terms: -2.5 + 2.5 = 0.0
0.0 + 3.5m + m2 = 0 + 2.5
3.5m + m2 = 0 + 2.5

Combine like terms: 0 + 2.5 = 2.5
3.5m + m2 = 2.5

The m term is 3.5m.  Take half its coefficient (1.75).
Square it (3.0625) and add it to both sides.

Add '3.0625' to each side of the equation.
3.5m + 3.0625 + m2 = 2.5 + 3.0625

Reorder the terms:
3.0625 + 3.5m + m2 = 2.5 + 3.0625

Combine like terms: 2.5 + 3.0625 = 5.5625
3.0625 + 3.5m + m2 = 5.5625

Factor a perfect square on the left side:
(m + 1.75)(m + 1.75) = 5.5625

Calculate the square root of the right side: 2.358495283

Break this problem into two subproblems by setting 
(m + 1.75) equal to 2.358495283 and -2.358495283.

Subproblem 1

m + 1.75 = 2.358495283 Simplifying m + 1.75 = 2.358495283 Reorder the terms: 1.75 + m = 2.358495283 Solving 1.75 + m = 2.358495283 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-1.75' to each side of the equation. 1.75 + -1.75 + m = 2.358495283 + -1.75 Combine like terms: 1.75 + -1.75 = 0.00 0.00 + m = 2.358495283 + -1.75 m = 2.358495283 + -1.75 Combine like terms: 2.358495283 + -1.75 = 0.608495283 m = 0.608495283 Simplifying m = 0.608495283

Subproblem 2

m + 1.75 = -2.358495283 Simplifying m + 1.75 = -2.358495283 Reorder the terms: 1.75 + m = -2.358495283 Solving 1.75 + m = -2.358495283 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-1.75' to each side of the equation. 1.75 + -1.75 + m = -2.358495283 + -1.75 Combine like terms: 1.75 + -1.75 = 0.00 0.00 + m = -2.358495283 + -1.75 m = -2.358495283 + -1.75 Combine like terms: -2.358495283 + -1.75 = -4.108495283 m = -4.108495283 Simplifying m = -4.108495283

Solution

The solution to the problem is based on the solutions from the subproblems. m = {0.608495283, -4.108495283}

See similar equations:

| w/2+1=7 | | a/4-5/6=1/2 | | 7(3e-4)=49 | | n/6=2 | | Sin(8x)=4sin(2x) | | 7p+14-3p=30 | | -5(n+2)=-125 | | 52=41-a | | 3x^3-5x^2+2=0 | | 5000+2.9=3.9 | | 8n+28=76 | | 8(-2)-(6(-2)-5)=1 | | 29-2x=12 | | x++5=23 | | 9y+4=-4 | | 24=y+11 | | 3x+4=-3x-8 | | -4u-5+2u=10 | | 2x-5+(2x-5)+x+x=38 | | x^2+44=100 | | 3n+2-5n=-14 | | -14=6m+m | | -7+m=-2 | | 10-3g=-2 | | -11c-6c=-68 | | 1-3g=-2 | | 7-c=13 | | (2-3)+(6+8i)= | | 6t^3+t^2+t=0 | | s+8=3 | | 10+6g=-32 | | 7(e-5)=42 |

Equations solver categories