If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
x^3*((2*x+6)/5) = 0
x^3*((2*x+6)/5) = 0
x^3*((2*x+6)/5) = 0
(x^3*(2*x+6))/5 = 0
( 2*x+6 )
2*x+6 = 0 // - 6
2*x = -6 // : 2
x = -6/2
x = -3
( x^3 )
1*x^3 = 0 // : 1
x^3 = 0
x = 0
x in (-oo:-3) U (-3:0) U (0:+oo)
(x*((9-x^2)/3))/(x^3*((2*x+6)/5)) = 0
(5*x*(9-x^2))/(3*x^3*(2*x+6)) = 0
( 9-x^2 )
-1*x^2 = -9 // : -1
x^2 = 9
x^2 = 9 // ^ 1/2
abs(x) = 3
x = 3 or x = -3
( x )
x = 0
x in { -3}
x in { 0}
x = 3
| 14xx-2x=0 | | 8y-15=5y+2 | | 5m+8m-3m=88 | | x^2-2x-143.23=-12.554 | | x^2-2x+143.23=-12.554 | | y-7=3(10-0) | | 32=6(w+2)-8w | | x^2-2x+143.23=12.554 | | 8+ln(8x)=29-2ln(x) | | (7/2)+(3/2d)=-9+1.5d | | 5x-19=89 | | 7/2+3/2d=-9+1.5d | | h(t)=-2t^2+32 | | 2/7(15x+4)=1/2(9x-20)+9 | | 6a=4a-6 | | 2(w-3)+9=3-6w | | w+3/4=7 | | ab^0= | | av^0= | | 9/16+33/4 | | 3+x=-2x-15 | | y=lx+4l-3 | | 7-2x-3x=-53 | | 360/9x=4 | | (3/10)^-4 | | 7(-1+4x)=49 | | 4/5*3/11*1/4 | | -6+6=105+3x | | y+4/5=61/3 | | 10Ei=1(i-3) | | 4y=-12x-48 | | h(x)=-4.9t^2+22.1t |