(4m^2+9m)-(-3m^2-4m+9)=

Simple and best practice solution for (4m^2+9m)-(-3m^2-4m+9)= 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 (4m^2+9m)-(-3m^2-4m+9)= equation:


Simplifying
(4m2 + 9m) + -1(-3m2 + -4m + 9) = 0

Reorder the terms:
(9m + 4m2) + -1(-3m2 + -4m + 9) = 0

Remove parenthesis around (9m + 4m2)
9m + 4m2 + -1(-3m2 + -4m + 9) = 0

Reorder the terms:
9m + 4m2 + -1(9 + -4m + -3m2) = 0
9m + 4m2 + (9 * -1 + -4m * -1 + -3m2 * -1) = 0
9m + 4m2 + (-9 + 4m + 3m2) = 0

Reorder the terms:
-9 + 9m + 4m + 4m2 + 3m2 = 0

Combine like terms: 9m + 4m = 13m
-9 + 13m + 4m2 + 3m2 = 0

Combine like terms: 4m2 + 3m2 = 7m2
-9 + 13m + 7m2 = 0

Solving
-9 + 13m + 7m2 = 0

Solving for variable 'm'.

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

Divide each side by '7'.
-1.285714286 + 1.857142857m + m2 = 0

Move the constant term to the right:

Add '1.285714286' to each side of the equation.
-1.285714286 + 1.857142857m + 1.285714286 + m2 = 0 + 1.285714286

Reorder the terms:
-1.285714286 + 1.285714286 + 1.857142857m + m2 = 0 + 1.285714286

Combine like terms: -1.285714286 + 1.285714286 = 0.000000000
0.000000000 + 1.857142857m + m2 = 0 + 1.285714286
1.857142857m + m2 = 0 + 1.285714286

Combine like terms: 0 + 1.285714286 = 1.285714286
1.857142857m + m2 = 1.285714286

The m term is 1.857142857m.  Take half its coefficient (0.9285714285).
Square it (0.8622448978) and add it to both sides.

Add '0.8622448978' to each side of the equation.
1.857142857m + 0.8622448978 + m2 = 1.285714286 + 0.8622448978

Reorder the terms:
0.8622448978 + 1.857142857m + m2 = 1.285714286 + 0.8622448978

Combine like terms: 1.285714286 + 0.8622448978 = 2.1479591838
0.8622448978 + 1.857142857m + m2 = 2.1479591838

Factor a perfect square on the left side:
(m + 0.9285714285)(m + 0.9285714285) = 2.1479591838

Calculate the square root of the right side: 1.465591752

Break this problem into two subproblems by setting 
(m + 0.9285714285) equal to 1.465591752 and -1.465591752.

Subproblem 1

m + 0.9285714285 = 1.465591752 Simplifying m + 0.9285714285 = 1.465591752 Reorder the terms: 0.9285714285 + m = 1.465591752 Solving 0.9285714285 + m = 1.465591752 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-0.9285714285' to each side of the equation. 0.9285714285 + -0.9285714285 + m = 1.465591752 + -0.9285714285 Combine like terms: 0.9285714285 + -0.9285714285 = 0.0000000000 0.0000000000 + m = 1.465591752 + -0.9285714285 m = 1.465591752 + -0.9285714285 Combine like terms: 1.465591752 + -0.9285714285 = 0.5370203235 m = 0.5370203235 Simplifying m = 0.5370203235

Subproblem 2

m + 0.9285714285 = -1.465591752 Simplifying m + 0.9285714285 = -1.465591752 Reorder the terms: 0.9285714285 + m = -1.465591752 Solving 0.9285714285 + m = -1.465591752 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-0.9285714285' to each side of the equation. 0.9285714285 + -0.9285714285 + m = -1.465591752 + -0.9285714285 Combine like terms: 0.9285714285 + -0.9285714285 = 0.0000000000 0.0000000000 + m = -1.465591752 + -0.9285714285 m = -1.465591752 + -0.9285714285 Combine like terms: -1.465591752 + -0.9285714285 = -2.3941631805 m = -2.3941631805 Simplifying m = -2.3941631805

Solution

The solution to the problem is based on the solutions from the subproblems. m = {0.5370203235, -2.3941631805}

See similar equations:

| (y-4)-(y+7)=9y | | 3x-3=x+9 | | 9x^2-6x-59+8x^2+8x= | | 4(3p-7)=7 | | x/5+9=4 | | 3(x-5)-4x=6(x-10)-(x+5) | | 5x+2y+.10z=100 | | 4x+(-4x+1)+3=0 | | -1(5y+1)-(4y-3)=-1 | | 2m-1=8m+7 | | 5a+7b+7c=36 | | 21-2n=7(n-10) | | 8(5+k)=7k-5 | | 6x-7x=6 | | 9-3m=6(m+4) | | 4x-20=2x+4 | | 8u-6=9(u-2) | | 5(t+2)=2t+6 | | (5x+3y)-(2x-4y)= | | 15c-c=28 | | 5(4z-1)-4(z+2)=11(z+1) | | 10x+1x=11+x | | 4(r-8)=16-r | | 10x+1x=88+x | | -1x^2=-11 | | 3(2z-1)-2(z+3)=2(z+1) | | -10a+2-7+3a= | | 1000(P-10)=2000 | | 8x-7x+1x=392 | | 8x-7x+1=392 | | -3y+2=26 | | 3x+4y-5x+2y= |

Equations solver categories