21m^2-41m+21=0

Simple and best practice solution for 21m^2-41m+21=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 21m^2-41m+21=0 equation:


Simplifying
21m2 + -41m + 21 = 0

Reorder the terms:
21 + -41m + 21m2 = 0

Solving
21 + -41m + 21m2 = 0

Solving for variable 'm'.

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

Divide each side by '21'.
1 + -1.952380952m + m2 = 0

Move the constant term to the right:

Add '-1' to each side of the equation.
1 + -1.952380952m + -1 + m2 = 0 + -1

Reorder the terms:
1 + -1 + -1.952380952m + m2 = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -1.952380952m + m2 = 0 + -1
-1.952380952m + m2 = 0 + -1

Combine like terms: 0 + -1 = -1
-1.952380952m + m2 = -1

The m term is -1.952380952m.  Take half its coefficient (-0.976190476).
Square it (0.9529478454) and add it to both sides.

Add '0.9529478454' to each side of the equation.
-1.952380952m + 0.9529478454 + m2 = -1 + 0.9529478454

Reorder the terms:
0.9529478454 + -1.952380952m + m2 = -1 + 0.9529478454

Combine like terms: -1 + 0.9529478454 = -0.0470521546
0.9529478454 + -1.952380952m + m2 = -0.0470521546

Factor a perfect square on the left side:
(m + -0.976190476)(m + -0.976190476) = -0.0470521546

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 45.81=9n | | 17-7z-8=-16-12z | | 2ab+4= | | x-90=6-2 | | -13+18b=17b | | 64/121•-57/88-8/11 | | ​f/6​​=2.5 | | X-(1-3X)=2-(-X-3) | | 28-28-4(x-5)=-4 | | y=9.75(3.5)+20.75 | | 30y+4=-2 | | -5k+6k-18=12-k | | 3x-90=6-2 | | k/3-2k=4=10 | | 12+2t-0.25t^2= | | 11p-10=6+12p | | 2x+5=7x+3 | | 13b-8(b-2)=46 | | 5c=7c+10 | | y=1.3(-4)+12 | | 12x+17y=3000 | | y=8.50(3.5)+25.00 | | 7-3/3=-5/6 | | a^2+12a+23=7 | | -6q+10=-7q | | 7f-4f=36 | | n-3=(n-2)180/120 | | (v+4)-0.7= | | 750=50x+150 | | y=50x+150 | | -6+10=-7q | | 7j-2(j+6)=18 |

Equations solver categories