n^2+7=21

Simple and best practice solution for n^2+7=21 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 n^2+7=21 equation: 


Simplifying
n2 + 7 = 21

Reorder the terms:
7 + n2 = 21

Solving
7 + n2 = 21

Solving for variable 'n'.

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

Add '-7' to each side of the equation.
7 + -7 + n2 = 21 + -7

Combine like terms: 7 + -7 = 0
0 + n2 = 21 + -7
n2 = 21 + -7

Combine like terms: 21 + -7 = 14
n2 = 14

Simplifying
n2 = 14

Take the square root of each side:
n = {-3.741657387, 3.741657387}

See similar equations:

| 2x-3(x-1)=5x | | X^2-x-45=-3 | | R^2+3r+4=2 | | 6/5x-4/10x=32/10 | | 6(x+7)=12x | | 1/2n=67 | | N-20=4(1+6n)-1 | | 10x+4y=6 | | 15x^2-90x=0 | | (8-2l)(4-2L)=12 | | x^3+2x^2+4x+4=0 | | x^4+2x^3+9x^2+4x+14=0 | | 6(2x+2)=71+4+3 | | 6.5g-7.2=9.4-1.8h | | 3x+2x=x-24 | | -4/2x-8 | | 9x-3y=36 | | x-56=3x+20 | | 6/x=2/x-2 | | 26=4(3x+1)-x | | 99.50-0.15= | | -2/3(9x-6)=2x | | -3x-8=6-5x | | 1-4cosx=-2cos^2x | | .40*2000= | | (x+11)/2-(2x+3)/5=5 | | 7x-5=-3x+25 | | 3x+23=5x-9 | | 3(5x-4)/3 | | ((p+12))/2=((8-3p))/4 | | 2m=4m-8 | | 14n+5=33 |

Equations solver categories