(7m^2+3m-4)-(3m^2+9m-5)=0

Simple and best practice solution for (7m^2+3m-4)-(3m^2+9m-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 (7m^2+3m-4)-(3m^2+9m-5)=0 equation:


Simplifying
(7m2 + 3m + -4) + -1(3m2 + 9m + -5) = 0

Reorder the terms:
(-4 + 3m + 7m2) + -1(3m2 + 9m + -5) = 0

Remove parenthesis around (-4 + 3m + 7m2)
-4 + 3m + 7m2 + -1(3m2 + 9m + -5) = 0

Reorder the terms:
-4 + 3m + 7m2 + -1(-5 + 9m + 3m2) = 0
-4 + 3m + 7m2 + (-5 * -1 + 9m * -1 + 3m2 * -1) = 0
-4 + 3m + 7m2 + (5 + -9m + -3m2) = 0

Reorder the terms:
-4 + 5 + 3m + -9m + 7m2 + -3m2 = 0

Combine like terms: -4 + 5 = 1
1 + 3m + -9m + 7m2 + -3m2 = 0

Combine like terms: 3m + -9m = -6m
1 + -6m + 7m2 + -3m2 = 0

Combine like terms: 7m2 + -3m2 = 4m2
1 + -6m + 4m2 = 0

Solving
1 + -6m + 4m2 = 0

Solving for variable 'm'.

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

Divide each side by '4'.
0.25 + -1.5m + m2 = 0

Move the constant term to the right:

Add '-0.25' to each side of the equation.
0.25 + -1.5m + -0.25 + m2 = 0 + -0.25

Reorder the terms:
0.25 + -0.25 + -1.5m + m2 = 0 + -0.25

Combine like terms: 0.25 + -0.25 = 0.00
0.00 + -1.5m + m2 = 0 + -0.25
-1.5m + m2 = 0 + -0.25

Combine like terms: 0 + -0.25 = -0.25
-1.5m + m2 = -0.25

The m term is -1.5m.  Take half its coefficient (-0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
-1.5m + 0.5625 + m2 = -0.25 + 0.5625

Reorder the terms:
0.5625 + -1.5m + m2 = -0.25 + 0.5625

Combine like terms: -0.25 + 0.5625 = 0.3125
0.5625 + -1.5m + m2 = 0.3125

Factor a perfect square on the left side:
(m + -0.75)(m + -0.75) = 0.3125

Calculate the square root of the right side: 0.559016994

Break this problem into two subproblems by setting 
(m + -0.75) equal to 0.559016994 and -0.559016994.

Subproblem 1

m + -0.75 = 0.559016994 Simplifying m + -0.75 = 0.559016994 Reorder the terms: -0.75 + m = 0.559016994 Solving -0.75 + m = 0.559016994 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + m = 0.559016994 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + m = 0.559016994 + 0.75 m = 0.559016994 + 0.75 Combine like terms: 0.559016994 + 0.75 = 1.309016994 m = 1.309016994 Simplifying m = 1.309016994

Subproblem 2

m + -0.75 = -0.559016994 Simplifying m + -0.75 = -0.559016994 Reorder the terms: -0.75 + m = -0.559016994 Solving -0.75 + m = -0.559016994 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + m = -0.559016994 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + m = -0.559016994 + 0.75 m = -0.559016994 + 0.75 Combine like terms: -0.559016994 + 0.75 = 0.190983006 m = 0.190983006 Simplifying m = 0.190983006

Solution

The solution to the problem is based on the solutions from the subproblems. m = {1.309016994, 0.190983006}

See similar equations:

| 7x+14=-2x-16 | | 7-5x+8+2x+4x-3=2*3 | | 5(0)-y=1 | | 5(x+9)+4=9x-4(x-5) | | 28xy=78 | | 7-5x+8+2x+4x-3=2*3.5 | | 1b+2t= | | 5y=28 | | 5p+z=6 | | 4/5=y/7 | | 3b+4t= | | 4/3×3.14×12^ | | 20f=5(f+3) | | 6x+11=6x-20 | | 10(3y-13)=23(y+40) | | 4/3×3.14×3^ | | 3x+12=-5x-17 | | 6X^2+2x-7.5=0 | | f(x)=4x^2-5x-1 | | 3[-7-(-4-8)]= | | 13(x-1)=4(2x+3) | | 3(p-2)=-2+14 | | 3x-21+5=32 | | -3[2-1]=0 | | -4(4x-4)=-10x-7 | | 5x-12=8x+46 | | 7x^3-3x^2+4x+10=0 | | -9(x-3)=81 | | -3+2-1=0 | | 60+30+x= | | 4x-7+43+16+6x=180 | | 2.3=2p |

Equations solver categories