If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x in (-oo:+oo)
7.2-((1.8/3)*x^4) = 0
7.2-0.6*x^4 = 0
-0.6*x^4 = -7.2 // : -0.6
x^4 = 12
x^4 = 12 // ^ 1/4
abs(x) = 12^(1/4)
x = 12^(1/4) or x = -12^(1/4)
x in { 12^(1/4), -12^(1/4) }
| 5x-2(x-7)=2 | | x^3+2x^2-3x-8=x^2+1 | | a^2-7a=30 | | (4+8i)+(9-7i)= | | 6n-15n^2=0 | | 11x+1=34 | | X+26=7x+56 | | 2(6x-1)+4(2-x)=30 | | 6(u-3)=9u-21 | | (x-24/x)^2-3(x-24/x)-10 | | y=(1/7)ln(cos^2(3x)) | | D-4d+6=36 | | -15/25 | | c/t-d/t=1 | | 3(x+4)=7(x-3) | | -z=8/5 | | 5.1x-2=4.1x | | -2(4-3y)=2y+16 | | -2(4x-3y)=2y+16 | | 19-3=-7w-6w+5w | | -2(4x-3)=2y+16 | | 1/4x-1/3x=1/2-1 | | -2(6x-1)+4(2-x)=30 | | 4x-9+x=8+2x+13 | | 7y-7y+5y=3+6 | | -7x^2=2x | | -3/7w=-9 | | 5(-6x-4)=-20 | | 2f=7f-17 | | 8x+3+x=2+4x-9 | | 4y-8x=21 | | -8p=2 |