If it's not what You are looking for type in the equation solver your own equation and let us solve it.
N in (-oo:+oo)
N^2 = 64/25 // - 64/25
N^2-(64/25) = 0
N^2-64/25 = 0
1*N^2 = 64/25 // : 1
N^2 = 64/25
N^2 = 64/25 // ^ 1/2
abs(N) = 8/5
N = 8/5 or N = -8/5
N in { 8/5, -8/5 }
| N^2=9/64 | | 6/2k=-3 | | 6y=8-9y+6y | | 8r-3(-6-6r)=18 | | 2x^2+10x-5x-3=0 | | -50=5x+50 | | 4x^4+16x^2+12=19x^3+19x | | h(1.5)=44 | | 38+7k=8(k+14) | | 8^3/8^5 | | 20=5x+50 | | 3x+2(x-5)=x+6 | | 55=3x-1 | | 2x-41=11 | | 4=x-(-11) | | 45n=10 | | 29=2x | | -2+9(-3)= | | 2x-7+5x=-28 | | F(2.75)=2x | | r^3-r^2-r-1=0 | | -5+n=12 | | 5-7x=12x+40 | | D+(-6)=16 | | -15=365 | | x^3-24x^2-40x-48=0 | | -2(-2)+7= | | 25c+17=5c-145 | | P^2+6p+5=-3 | | F(-11)=2x | | 3/5a=-4 | | (X^1/2)^-6 |