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 = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
450/x = 30 // - 30
450/x-30 = 0
450*x^-1 = 30 // : 450
x^-1 = 1/15
-1 < 0
1/(x^1) = 1/15 // * x^1
1 = 1/15*x^1 // : 1/15
15 = x^1
x = 15
x = 15
| 6x(3x+8)=0 | | n^2+16n+64=30 | | 5(3y+2)=15y-26 | | X^2+1.5x-0.5=-1 | | 0.4(2x+.5)=3(0.2x+(-2))-4 | | x^3+2x^2-2x-3=0 | | 1N=78 | | 3x+4=7+6x | | 2(x+1)+2x=24 | | 9N=48 | | s+196=4 | | x+25+4x=-20-4x-27 | | 0=4x^2+x | | 7y-2xy=8x | | 36/6(2x2x2)= | | 52=-5x+x+4 | | x-5=4.5655 | | 0=0.002d^2+0.4d | | 5x+6+6x=-115 | | 5x^2-33x+21=0 | | 0=-0.002x^2+0.4x | | 183+555-x=732 | | -1+2x+6x=39 | | 10x+5=12x^2+6 | | X^2+2x=32 | | 0=-0.002d^2+0.4d | | 7r-1=20 | | m+22.50=1.25 | | 720n=(n-2)*180 | | 2f^2-6f+308=0 | | 3n-39=n-9 | | 8=-3x+6x+11 |