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)
5-((3*x^4)/5) = 0
(-3/5)*x^4+5 = 0
-3/5*x^4 = -5 // : -3/5
x^4 = 25/3
x^4 = 25/3 // ^ 1/4
abs(x) = (25/3)^(1/4)
x = (25/3)^(1/4) or x = -(25/3)^(1/4)
x in { (25/3)^(1/4), -(25/3)^(1/4) }
| 50+30+x=1.6x | | (P/4)-(3p/8)=4 | | 0+30+x=1.6x | | 100+100+x=1.6x | | -16t^2+62t+4=56 | | 0+2000+x=1.55x | | 0+2000+x=1.6x | | 9/x=.15 | | 612+100+x=1.6x | | 14(6c-4)=4c-8 | | 167+100+x=1.6x | | x(20+7)=x^2-280 | | 3=3a | | -5x^2-9+9=0 | | 0+100+x=1.6x | | 3x^2-42x-153=0 | | 6(v-7)=9v-30 | | x^4+8x^3+6x^2-5x+14=0 | | x^2+60-16x=0 | | 4n+13=2n+25 | | 6y-8=90 | | 80+2x-x^2=0 | | 2(a-1)-5a=7a | | 6y-8=360 | | 10(squared)+x(squared)=(7+x)(squared) | | 0+1000+x=2.5x | | 0+500+x=2.5x | | 243+32x^10=0 | | 3(3+-3y)+5y=1 | | 144=19+5x | | 0+200+x=1.52x | | 4u+u^2=0 |