9n^2-5=4

Simple and best practice solution for 9n^2-5=4 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 9n^2-5=4 equation: 


Simplifying
9n2 + -5 = 4

Reorder the terms:
-5 + 9n2 = 4

Solving
-5 + 9n2 = 4

Solving for variable 'n'.

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

Add '5' to each side of the equation.
-5 + 5 + 9n2 = 4 + 5

Combine like terms: -5 + 5 = 0
0 + 9n2 = 4 + 5
9n2 = 4 + 5

Combine like terms: 4 + 5 = 9
9n2 = 9

Divide each side by '9'.
n2 = 1

Simplifying
n2 = 1

Take the square root of each side:
n = {-1, 1}

See similar equations:

| 5n^2+3=128 | | X+46=125 | | 4(2x^2-4x)= | | 100x^2-10=15 | | 2sin(x)-1=0 | | 4-3x=1-x | | x^2+13x+43=0 | | v^2+16=-2-6v^2-27v | | 4y+18x=162 | | 6y-5x=10 | | 90+2a=180 | | 6m-4=m+12 | | 4x+18y=162 | | X^2-4y^2-2x+16y-20=0 | | 2x*(5+1)=2+5 | | 28=-1E-05x+23.78 | | .4n=3.6667 | | y=-1E-05x+23.78 | | 4n+36=7n | | 12x^2+5x=-2 | | 7v^2+40v-14=2v^2+7v | | 13-4=4x-3 | | Ln(5x-7)=7 | | 9(7x-6)=-135 | | -8=f+1 | | 5y+3(y+3)=54 | | 4t^2+0+0=0 | | F=I+(IR) | | -24+34x=-4x-7x^2 | | f=i(ir) | | 5=p-3 | | 2x-(t^4*64)+9x(-71-2)5-x= |

Equations solver categories