4m^2-7m=4

Simple and best practice solution for 4m^2-7m=4 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^2-7m=4 equation:


Simplifying
4m2 + -7m = 4

Reorder the terms:
-7m + 4m2 = 4

Solving
-7m + 4m2 = 4

Solving for variable 'm'.

Reorder the terms:
-4 + -7m + 4m2 = 4 + -4

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

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

Divide each side by '4'.
-1 + -1.75m + m2 = 0

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + -1.75m + 1 + m2 = 0 + 1

Reorder the terms:
-1 + 1 + -1.75m + m2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -1.75m + m2 = 0 + 1
-1.75m + m2 = 0 + 1

Combine like terms: 0 + 1 = 1
-1.75m + m2 = 1

The m term is -1.75m.  Take half its coefficient (-0.875).
Square it (0.765625) and add it to both sides.

Add '0.765625' to each side of the equation.
-1.75m + 0.765625 + m2 = 1 + 0.765625

Reorder the terms:
0.765625 + -1.75m + m2 = 1 + 0.765625

Combine like terms: 1 + 0.765625 = 1.765625
0.765625 + -1.75m + m2 = 1.765625

Factor a perfect square on the left side:
(m + -0.875)(m + -0.875) = 1.765625

Calculate the square root of the right side: 1.328768227

Break this problem into two subproblems by setting 
(m + -0.875) equal to 1.328768227 and -1.328768227.

Subproblem 1

m + -0.875 = 1.328768227 Simplifying m + -0.875 = 1.328768227 Reorder the terms: -0.875 + m = 1.328768227 Solving -0.875 + m = 1.328768227 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '0.875' to each side of the equation. -0.875 + 0.875 + m = 1.328768227 + 0.875 Combine like terms: -0.875 + 0.875 = 0.000 0.000 + m = 1.328768227 + 0.875 m = 1.328768227 + 0.875 Combine like terms: 1.328768227 + 0.875 = 2.203768227 m = 2.203768227 Simplifying m = 2.203768227

Subproblem 2

m + -0.875 = -1.328768227 Simplifying m + -0.875 = -1.328768227 Reorder the terms: -0.875 + m = -1.328768227 Solving -0.875 + m = -1.328768227 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '0.875' to each side of the equation. -0.875 + 0.875 + m = -1.328768227 + 0.875 Combine like terms: -0.875 + 0.875 = 0.000 0.000 + m = -1.328768227 + 0.875 m = -1.328768227 + 0.875 Combine like terms: -1.328768227 + 0.875 = -0.453768227 m = -0.453768227 Simplifying m = -0.453768227

Solution

The solution to the problem is based on the solutions from the subproblems. m = {2.203768227, -0.453768227}

See similar equations:

| 4w-7=5 | | (3y+2)(9+y)=0 | | 42X^2+33x=0 | | 7d+d-4d-7=5 | | 2/3x=100 | | ((2v^2)(w)/((3x^5)-(4w) | | 4x/5-13x/20=21 | | -2x(-3)+4= | | 7x+5z=7+8y | | 31066=0.02(x)+x | | 11-7=14 | | -5.6=x-3 | | 31066=0.02(x) | | http://media.apexlearning.com/Images/200907/10/a2b09d06-ccdc-4b9e-8d48-74a41de15f90.gif | | (8)^2/3 | | -31/5 | | 2x^2+8y=121.4 | | 3x+6y=5600 | | 23/14-2/7 | | 3x+7x-4=66 | | 6/8=×/12 | | 14p+q-19p+20q= | | (8v+3)(7v-1)=0 | | v^4+2v^2-15=0 | | 12x+15y=-18 | | -2y+16+6y=14 | | Y=8x^3-4x^2-60x | | y=-8(-2)+1 | | 2(x+3)=6x+5-4x+1 | | 50p+60q= | | 1.4(1.5x-2.8y)-2.5(2.0x+1.5y)= | | (12x^2-3)(x+2)=0 |

Equations solver categories