If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( a )
a = 0
a^2+5 = 0
a = 0
a = 0
a^2+5 = 0
a^2+5 = 0
1*a^2 = -5 // : 1
a^2 = -5
a in (-oo:0) U (0:+oo)
1/a = -6/(a^2+5) // + -6/(a^2+5)
1/a-(-6/(a^2+5)) = 0
6*(a^2+5)^-1+1/a = 0
6/(a^2+5)+1/a = 0
(6*a)/(a*(a^2+5))+(1*(a^2+5))/(a*(a^2+5)) = 0
1*(a^2+5)+6*a = 0
a^2+6*a+5 = 0
a^2+6*a+5 = 0
a^2+6*a+5 = 0
DELTA = 6^2-(1*4*5)
DELTA = 16
DELTA > 0
a = (16^(1/2)-6)/(1*2) or a = (-16^(1/2)-6)/(1*2)
a = -1 or a = -5
(a+5)*(a+1) = 0
((a+5)*(a+1))/(a*(a^2+5)) = 0
((a+5)*(a+1))/(a*(a^2+5)) = 0 // * a*(a^2+5)
(a+5)*(a+1) = 0
( a+1 )
a+1 = 0 // - 1
a = -1
( a+5 )
a+5 = 0 // - 5
a = -5
a in { -1, -5 }
| .6n+8=.5n | | -7x-6(-2x-2)=57 | | -8-8x=6-8x | | b^3-b^2+2b-2= | | x+2x+5+3x-35=180 | | 5x+2=3y+2 | | 12(2-5b)=24 | | -2=3x+18 | | (1/a)=(-6)/(a^2+5) | | 2(-1.5)+6y=6 | | 9-3(2-4)=15 | | 10-5/2x | | 6k^2/2k | | 1.5x+24=18 | | 7h+f=2h+y | | 3=(16/a)(50.2/2) | | 2(x-6)-5=9 | | 1/5(10-5x+10)=1/2(x+1) | | 7x=294 | | 156=-13v | | -24/5=31/2n | | (d-3)(2/5)=30 | | 2(d-9)+5= | | 14-3(5+-12)=1-(20t+1) | | x/9=17/9 | | 3x+5=4x-20 | | 1.5(x-4)=.3(2x-6) | | 22/9=4/5m | | b-5/4=b+7/3 | | 12(x)=16(x-2) | | n/6=72 | | 4y+6fory=18 |