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 = 0
a = 0
a in (-oo:0) U (0:+oo)
-3/a = (5/4)*a+4*a-(5/a) // - (5/4)*a+4*a-(5/a)
5/a-((5/4)*a)-(4*a)-3/a = 0
(-5/4)*a-4*a-3/a+5/a = 0
2*a^-1-21/4*a^1 = 0
(2*a^0-21/4*a^2)/(a^1) = 0 // * a^2
a^1*(2*a^0-21/4*a^2) = 0
a^1
(-21/4)*a^2+2 = 0
(-21/4)*a^2+2 = 0
DELTA = 0^2-(2*4*(-21/4))
DELTA = 42
DELTA > 0
a = (42^(1/2)+0)/(2*(-21/4)) or a = (0-42^(1/2))/(2*(-21/4))
a = -2/21*42^(1/2) or a = 2/21*42^(1/2)
a in { -2/21*42^(1/2), 2/21*42^(1/2)}
a in { -2/21*42^(1/2), 2/21*42^(1/2) }
| 2(4x+3)=7x-5 | | -3x+x^2-8+4x-3x^2-2=0 | | -5/4=7/3x | | (11-k)+(16-k)=19 | | 2x/5+1/5=-4 | | 8x^2-141/24 | | 2m-3n=6m=3-2n | | 9(2+5x)=48 | | M=3-2n | | 0.50x+0.45(30)=21.5 | | 8a^2-98= | | 17(10+8)= | | (t^2-2t-15)/(t^2-9)/(t^2-3t) | | ((t^2-2t-15))/(t^2-9)/(t^2-3t) | | -13k=65 | | (-4m^4n^3)(5mn^6)= | | 3n=8-5-3 | | x^2-3=12 | | 0=9y-6y-3y | | 5m=18+N | | 2x+3x-5x=7.2 | | 30+1m=T | | 0.3x+x=10 | | (8x-2)*(x+5)= | | 18+5m=N | | (7b+5)(2b-6)=0 | | 3x(2x)+4x+1x= | | 25p^2-60p+36= | | 5-2x=4-2x | | 1/4(8m-4n)+1/3(6m+3n) | | (9t+4t)(5t-15)=0 | | 2k-6m=23 |