2m^2-1=7

Simple and best practice solution for 2m^2-1=7 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 2m^2-1=7 equation: 


Simplifying
2m2 + -1 = 7

Reorder the terms:
-1 + 2m2 = 7

Solving
-1 + 2m2 = 7

Solving for variable 'm'.

Move all terms containing m to the left, all other terms to the right.

Add '1' to each side of the equation.
-1 + 1 + 2m2 = 7 + 1

Combine like terms: -1 + 1 = 0
0 + 2m2 = 7 + 1
2m2 = 7 + 1

Combine like terms: 7 + 1 = 8
2m2 = 8

Divide each side by '2'.
m2 = 4

Simplifying
m2 = 4

Take the square root of each side:
m = {-2, 2}

See similar equations:

| 1206.4/x=52 | | 6m=3(6m+20) | | 18=b(b-7) | | (2x+27)=(7x) | | B^2+8=6b | | 2-2(9-2n)=72 | | 11n-9-10n-12=4 | | 0=x^3-9x^2-12x+160 | | 2m+17=3m+12 | | 6x-5=7x+1 | | 9/10b-1=-19/20b+4 | | f(x)=2y+5 | | x/4-6=-18 | | 57-2x=10-8x | | x=32y^2 | | 14-10x=89-31x+21 | | 3x+8=-x+4 | | 5a/2a | | 5x-40-18= | | 4a+20=6(a+2)-3(a-5) | | 3-(x+3)=2x-1 | | 2(3x-1)-7x=-10 | | 28a+3=-7a+8 | | 3(x+4)=-21 | | 2(x+3)=-7+2x | | -4y/8-12/8-2/9=11y/5-9/5 | | (2x)^(2/3)=8 | | 3-8+11= | | 1/3x+10=5 | | (2x)^2/3=8 | | 2+1/3x=-2 | | 9r^2+16=8r+8r^2 |

Equations solver categories