If it's not what You are looking for type in the equation solver your own equation and let us solve it.
(-x)^2 = -4;x
x
8-3
1.431;0.529
-5;6;5;9;0;0
564.7;1000
| P=228x-42 | | 13=19 | | 1000=4+20*(n-1)+8 | | (X-3)(x+5)+7=0 | | 40x=20x+120 | | f(x)=-2x^2+1000x | | 5x-3=7x+51 | | 0.83=4+20*(n-1)+8 | | 23-n=12 | | -24/25v | | x+q=yb | | (8m^2+4)(8m^2-4)=am^4+b | | 57+37= | | 4b+3.75=x | | -44d+-144d=32+16d | | 8x+24=5x+10 | | (3)/(5)x(5)/(9) | | 50x+20x=3.5 | | 6+x-5=180 | | 8+3u=-13 | | 50x+20=3.5 | | 3/5x5/9 | | 0=-5t^2+40t-15 | | 11z+12=3z+180 | | 4(-2d)-12d(d+3)=8(-2d+4) | | -13+3z=-52+18 | | A=4+20*(n-1)+8 | | 2/x-4/y=3 | | X^2+8x-233=0 | | -5x+2x=-2-2(1-x) | | 7=c+5 | | z^3=1/8 |