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)
-8/4 = (4*k)/1 // - (4*k)/1
-((4*k)/1)-8/4 = 0
-4*k-8/4 = 0
-4*k-2 = 0 // + 2
-4*k = 2 // : -4
k = 2/(-4)
k = -1/2
k = -1/2
| 2x+3=c-5 | | =6-2x | | x^2-14x=17 | | 8n-7(-8-8n)=56 | | 5/6-16/21x-1/3-1/9x= | | 93.96=4.7p+8.7 | | 4xy+6x+2y+3=0 | | (4+g)(-11)=72 | | 6a^3b+9ab^4= | | log(5x+40)=3 | | -16t^2+8t+1= | | (N^12)^-1/6 | | h=-16t^2+8t+1 | | 6x+3+8x+11= | | (3.14)(6/2)6 | | m^2-4m=21 | | (8xy)+(15xy)= | | x^2+y^2-12x+4y=-15 | | 19.00+1.50x+15.00+2.75x= | | 20-15k=17 | | 3w+4= | | 4(x+-5)-5=6x+7.4-4x | | 10(x+5)=6x+6 | | 49x^2-84x+k= | | 4=-7+2n | | 50V*e^-t/T | | -9x-y=23 | | x^2+kx+36= | | r=cm+cn | | r=cm+cnform | | 8y+(y^2)=-16+4x-(x^2) | | 8-3y=128 |