3m^2-7m-3=0

Simple and best practice solution for 3m^2-7m-3=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 3m^2-7m-3=0 equation:


Simplifying
3m2 + -7m + -3 = 0

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

Solving
-3 + -7m + 3m2 = 0

Solving for variable 'm'.

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

Divide each side by '3'.
-1 + -2.333333333m + m2 = 0

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + -2.333333333m + 1 + m2 = 0 + 1

Reorder the terms:
-1 + 1 + -2.333333333m + m2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -2.333333333m + m2 = 0 + 1
-2.333333333m + m2 = 0 + 1

Combine like terms: 0 + 1 = 1
-2.333333333m + m2 = 1

The m term is -2.333333333m.  Take half its coefficient (-1.166666667).
Square it (1.361111112) and add it to both sides.

Add '1.361111112' to each side of the equation.
-2.333333333m + 1.361111112 + m2 = 1 + 1.361111112

Reorder the terms:
1.361111112 + -2.333333333m + m2 = 1 + 1.361111112

Combine like terms: 1 + 1.361111112 = 2.361111112
1.361111112 + -2.333333333m + m2 = 2.361111112

Factor a perfect square on the left side:
(m + -1.166666667)(m + -1.166666667) = 2.361111112

Calculate the square root of the right side: 1.536590743

Break this problem into two subproblems by setting 
(m + -1.166666667) equal to 1.536590743 and -1.536590743.

Subproblem 1

m + -1.166666667 = 1.536590743 Simplifying m + -1.166666667 = 1.536590743 Reorder the terms: -1.166666667 + m = 1.536590743 Solving -1.166666667 + m = 1.536590743 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '1.166666667' to each side of the equation. -1.166666667 + 1.166666667 + m = 1.536590743 + 1.166666667 Combine like terms: -1.166666667 + 1.166666667 = 0.000000000 0.000000000 + m = 1.536590743 + 1.166666667 m = 1.536590743 + 1.166666667 Combine like terms: 1.536590743 + 1.166666667 = 2.70325741 m = 2.70325741 Simplifying m = 2.70325741

Subproblem 2

m + -1.166666667 = -1.536590743 Simplifying m + -1.166666667 = -1.536590743 Reorder the terms: -1.166666667 + m = -1.536590743 Solving -1.166666667 + m = -1.536590743 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '1.166666667' to each side of the equation. -1.166666667 + 1.166666667 + m = -1.536590743 + 1.166666667 Combine like terms: -1.166666667 + 1.166666667 = 0.000000000 0.000000000 + m = -1.536590743 + 1.166666667 m = -1.536590743 + 1.166666667 Combine like terms: -1.536590743 + 1.166666667 = -0.369924076 m = -0.369924076 Simplifying m = -0.369924076

Solution

The solution to the problem is based on the solutions from the subproblems. m = {2.70325741, -0.369924076}

See similar equations:

| 2/x+7=16 | | 8a^2=-24 | | 11+3=7x | | x^2-y^2=2x+2y | | n^2+2P-2P=2h-2P | | -2x^2+7x+c=0 | | 8m^2+2m=7 | | 8m-2m=7 | | X^2+20x+100=9 | | 2(p-3)=-14 | | a^7/70(a-3) | | t/6+2=-2 | | x^2-18=-2 | | (2y/5)+(y/5) | | t/6 | | 12x+5y=92 | | p=2a+bfora | | 34300000/277000000 | | x^2-x+12=6x | | 2x^2-12+10=0 | | 2y/5+y/5 | | 2(x+2)=-4 | | n^2+2P=2h | | x^2-5=25 | | n/2+4=16 | | 3a-1/a+1=4 | | (X+3)(X+8)=234 | | -2/3t-3=5 | | 3(4x-(3-5y+7x)+5y)= | | 80c+12=25200 | | 10y-5x=3 | | 12+80c=252 |

Equations solver categories