9m^2-2m-1=0

Simple and best practice solution for 9m^2-2m-1=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 9m^2-2m-1=0 equation:


Simplifying
9m2 + -2m + -1 = 0

Reorder the terms:
-1 + -2m + 9m2 = 0

Solving
-1 + -2m + 9m2 = 0

Solving for variable 'm'.

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

Divide each side by '9'.
-0.1111111111 + -0.2222222222m + m2 = 0

Move the constant term to the right:

Add '0.1111111111' to each side of the equation.
-0.1111111111 + -0.2222222222m + 0.1111111111 + m2 = 0 + 0.1111111111

Reorder the terms:
-0.1111111111 + 0.1111111111 + -0.2222222222m + m2 = 0 + 0.1111111111

Combine like terms: -0.1111111111 + 0.1111111111 = 0.0000000000
0.0000000000 + -0.2222222222m + m2 = 0 + 0.1111111111
-0.2222222222m + m2 = 0 + 0.1111111111

Combine like terms: 0 + 0.1111111111 = 0.1111111111
-0.2222222222m + m2 = 0.1111111111

The m term is -0.2222222222m.  Take half its coefficient (-0.1111111111).
Square it (0.01234567901) and add it to both sides.

Add '0.01234567901' to each side of the equation.
-0.2222222222m + 0.01234567901 + m2 = 0.1111111111 + 0.01234567901

Reorder the terms:
0.01234567901 + -0.2222222222m + m2 = 0.1111111111 + 0.01234567901

Combine like terms: 0.1111111111 + 0.01234567901 = 0.12345679011
0.01234567901 + -0.2222222222m + m2 = 0.12345679011

Factor a perfect square on the left side:
(m + -0.1111111111)(m + -0.1111111111) = 0.12345679011

Calculate the square root of the right side: 0.351364184

Break this problem into two subproblems by setting 
(m + -0.1111111111) equal to 0.351364184 and -0.351364184.

Subproblem 1

m + -0.1111111111 = 0.351364184 Simplifying m + -0.1111111111 = 0.351364184 Reorder the terms: -0.1111111111 + m = 0.351364184 Solving -0.1111111111 + m = 0.351364184 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '0.1111111111' to each side of the equation. -0.1111111111 + 0.1111111111 + m = 0.351364184 + 0.1111111111 Combine like terms: -0.1111111111 + 0.1111111111 = 0.0000000000 0.0000000000 + m = 0.351364184 + 0.1111111111 m = 0.351364184 + 0.1111111111 Combine like terms: 0.351364184 + 0.1111111111 = 0.4624752951 m = 0.4624752951 Simplifying m = 0.4624752951

Subproblem 2

m + -0.1111111111 = -0.351364184 Simplifying m + -0.1111111111 = -0.351364184 Reorder the terms: -0.1111111111 + m = -0.351364184 Solving -0.1111111111 + m = -0.351364184 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '0.1111111111' to each side of the equation. -0.1111111111 + 0.1111111111 + m = -0.351364184 + 0.1111111111 Combine like terms: -0.1111111111 + 0.1111111111 = 0.0000000000 0.0000000000 + m = -0.351364184 + 0.1111111111 m = -0.351364184 + 0.1111111111 Combine like terms: -0.351364184 + 0.1111111111 = -0.2402530729 m = -0.2402530729 Simplifying m = -0.2402530729

Solution

The solution to the problem is based on the solutions from the subproblems. m = {0.4624752951, -0.2402530729}

See similar equations:

| x^2+14x+3=-10 | | X^2+18x-55=4 | | v^2=56-v | | (x-4)2=x | | 3v^2+2v=8 | | r^2+20r+61=10 | | -12=6y | | 40/25=N/5 | | X^2+7x=o | | N/4=4/8 | | 2n^2-3n-5=-6 | | 10B-5=15 | | 0.5(r-12)=0.6r | | e^2x-5*ex+5=0 | | (3ln(2x+3))-(2ln(2x-1))= | | t/6-2=9 | | 3m^2-7m-26=0 | | f^3-4f^2-9f+36= | | 4z/9-3=-5 | | 256n^4-c^4= | | 23-25x=17 | | 3n^2-2n-6=9 | | 2d^4-32f^4= | | R/6=6 | | 12=7-10x | | 41-3X=11-9X | | 6x=-4(5-2x) | | 2p^3-162p= | | 2nsquared+8=-2n | | 26.75=22.5+2s | | 12x+4x+7x= | | -5a=-[30] |

Equations solver categories