If it's not what You are looking for type in the equation solver your own equation and let us solve it.
y(y3+2y)=15
We move all terms to the left:
y(y3+2y)-(15)=0
We add all the numbers together, and all the variables
y(+y^3+2y)-15=0
We multiply parentheses
y^4+2y^2-15=0
We do not support eypression: y^4
| 7/8*x=56 | | (3y+3)-10y=-25 | | 2-3x+5=4x+3 | | 12x=-8x+7/3 | | 3y+3-10y=-25 | | -7+8(6x+7)=-31+8x | | -3b+2=4b—12 | | 1/12x=40 | | -5(-3x+2)-4x-5=-48 | | 42=7/3*x | | 6(a+3)=16+6a | | 39+7m=-8m-6(1-4m) | | 2.1+0.8x=3 | | 812-n=318 | | 4x+100+2x+70=180 | | 44=6x-1+1 | | -7=1/5r | | 8.9-0.3x=0.8x | | x^2+11x+312=0 | | 5(x+4)-3x+3=5 | | 11p-9=-11 | | -2(2-8x)=35+3x | | 2(6x+8)=(7x+9) | | 63=-7r | | 5(x+4)-4x+3=5 | | t(3t2+4)=12 | | -y+5=4-X | | 3x+420=10000 | | 25n=875 | | 12x-36+2x=-2(2+x)x | | 4=32b | | 4(2x-5x)=8x-2 |