If it's not what You are looking for type in the equation solver your own equation and let us solve it.
50=k100^2
We move all terms to the left:
50-(k100^2)=0
We move all terms containing k to the left, all other terms to the right
-k100^2=-50
k=-50/1
k=-50
| X-6=5c+10 | | 8x-9=7× | | x+15+x=565 | | 5x^2=12x+6 | | -4(w-9)=9w-42 | | 2x-(-4)=(-8) | | -7-t/2=8 | | 5x+10+66=11x+2 | | 6x-30=5x+24/2 | | -8=-(x+40) | | 5x+10+68=11x+2 | | 7f-6=2f+39 | | -3(2x-3)=2(5-3x) | | 2x-5=3-34 | | 2x+16=80/2 | | 4l+15=19 | | 4f-10=2f+8 | | 2g+3g-3+6=18 | | -32=-7-3+3n-9 | | -4/8(6.3x-4.18)=-58.56 | | Y=4y-15 | | 7.3=10.2-2w/3 | | 4=-2k-2 | | 34.99x+0.14=40 | | 6/7+x=32/7+25/7x+4/7x | | -2(x-5=-14 | | 3x-6=2x+6, | | 3k+10=16 | | 6-5(3x-3)=39 | | 4j-4=2j+14 | | 5x+2+x+10=7x+2 | | -z-3=9 |