m^2+7m+2=0

Simple and best practice solution for m^2+7m+2=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+7m+2=0 equation:


Simplifying
m2 + 7m + 2 = 0

Reorder the terms:
2 + 7m + m2 = 0

Solving
2 + 7m + m2 = 0

Solving for variable 'm'.

Begin completing the square.

Move the constant term to the right:

Add '-2' to each side of the equation.
2 + 7m + -2 + m2 = 0 + -2

Reorder the terms:
2 + -2 + 7m + m2 = 0 + -2

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

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

The m term is 7m.  Take half its coefficient (3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
7m + 12.25 + m2 = -2 + 12.25

Reorder the terms:
12.25 + 7m + m2 = -2 + 12.25

Combine like terms: -2 + 12.25 = 10.25
12.25 + 7m + m2 = 10.25

Factor a perfect square on the left side:
(m + 3.5)(m + 3.5) = 10.25

Calculate the square root of the right side: 3.201562119

Break this problem into two subproblems by setting 
(m + 3.5) equal to 3.201562119 and -3.201562119.

Subproblem 1

m + 3.5 = 3.201562119 Simplifying m + 3.5 = 3.201562119 Reorder the terms: 3.5 + m = 3.201562119 Solving 3.5 + m = 3.201562119 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + m = 3.201562119 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + m = 3.201562119 + -3.5 m = 3.201562119 + -3.5 Combine like terms: 3.201562119 + -3.5 = -0.298437881 m = -0.298437881 Simplifying m = -0.298437881

Subproblem 2

m + 3.5 = -3.201562119 Simplifying m + 3.5 = -3.201562119 Reorder the terms: 3.5 + m = -3.201562119 Solving 3.5 + m = -3.201562119 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + m = -3.201562119 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + m = -3.201562119 + -3.5 m = -3.201562119 + -3.5 Combine like terms: -3.201562119 + -3.5 = -6.701562119 m = -6.701562119 Simplifying m = -6.701562119

Solution

The solution to the problem is based on the solutions from the subproblems. m = {-0.298437881, -6.701562119}

See similar equations:

| 3.67x+25.69=51.38 | | 3/4x-7/4=4 | | (-5-1)=(-2+3) | | 7.48x+64=55.9504+8x | | 7.48+64=55.9504+8x | | 14=5(x-0.2)-6 | | -2.6x+1.1=11.9 | | 6/7-2x-8/7 | | d^2+8d+4=0 | | 2f^2-4f-8=0 | | -15=-45 | | 1x-4=2x+5 | | 7j^2-4j-9=0 | | 3(2y-2)-3=5y+1 | | 2t^2-7t-3=0 | | (m4)3(m2)9/(m3)2= | | 6(x-6)+4x-8=4(x-8)+12x | | 120+200+X=360 | | 7(x-6)+2x-6=4(x-8)+13x | | x+3=3(13) | | 2(3y-3)-5=5y+2 | | 4(3y-3)-5=2y+3 | | 10x-4=4x+5 | | 4(3y-3)=-5 | | 4(3y-3)=05 | | 4(3y-3)=3y | | 5(x-10)=25 | | 3+39=3y | | 13+39=3y | | 13+3=3y | | 13+3=3y+x | | (x+3+3y)=(2x-5+5y+5) |

Equations solver categories