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)
(2/5)*x^9 = 1 // - 1
(2/5)*x^9-1 = 0
2/5*x^9 = 1 // : 2/5
x^9 = 5/2
x^9 = 5/2 // ^ 1/9
x = (5/2)^(1/9)
x = (5/2)^(1/9)
| -35+35=-23p-11p | | -6k-28=-2(7+4k) | | 27x^5/72x^4 | | 3*6*2-3= | | -4x+6y=-54 | | X=c+273.15 | | 4(2f+7)=-17 | | 5-5x+4x=-4 | | 74+3x+7=180 | | 3/5=5/14x | | -4w-13=-21 | | 23=v/5-11 | | -4(3n-8)=13+7n | | (3p-4)=17 | | -8k+14=-2(4k-7) | | 8.5p-2=32 | | 6/x-1/4=3/4x | | 10(10+7)-16(10)= | | X/-3=4-6 | | -10x(-8)= | | 5(14-2)²/2 | | .25a-12=1a+6 | | x^3-1/x-1= | | 5(g-7)+g-3(g-5)=0 | | -13-y=-4.9 | | 8+52=2z-48 | | 3s-12+s=5s-6-3s | | 18*12-9*15= | | 8x(-10)= | | n^4=16 | | 3(a-3)=-2+2a | | 5.5-3y=2y-6.25 |