If it's not what You are looking for type in the equation solver your own equation and let us solve it.
k in (-oo:+oo)
(k*((2*k^3)/7))^2 = 0
4/49*k^8 = 0 // : 4/49
k^8 = 0
k = 0
k = 0
| -7x-14y-4x+11y= | | -13x=-13x | | 50y=7(7+4) | | In(x-1)+In(x+1)=3 | | (9+w)(5w+7)=0 | | 2/3t^2=6 | | (9x-14)(7x+4)= | | 3*4*-7+3(4x)=24 | | y/7=13/11 | | (-0.2)= | | (5x-8)(2x+1)= | | (.5)*.5= | | a+16=25 | | x=10-3(5) | | K/3-1/2=12 | | 5z-4-3z=20 | | -3(t+5)=-39 | | 2(d-32)(d+27)=0 | | 6(d-7)=-24 | | xln(x)-20+5ln(x)-4x=0 | | -10-2x=20 | | 6(-2)-3(-5)= | | -3.5+1.25x=13.5 | | -3.5+1.25=13.5 | | 5y+12=20 | | y=-72x | | -7b+2b= | | y=41 | | y=x-80 | | W^2+28w=-52 | | X^2+5x+10=6 | | y=-25x |