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(1-x^2)/(x^2+4)
x^2-((x^2)/4)+1
545
9*x^5*7^x
9*x^(57^x)
| 2k^2+7k-30=0 | | 7-q/4=2.5 | | 7-4=2.5 | | -3x+10y=0 | | sx+ty=ufory | | 8v=-18 | | 4lnx+6=0 | | 7(x+2)-8(4+3x)=47 | | 7(x-2)-8(4+3x)=47 | | 9x^2-100x+1000=0 | | 4x-t=14 | | (9-3g)-(3+12g)= | | log(x-1)-log(x+1)-log(8)=-2 | | 2x-7y+z=-5 | | x^3+4x^2+60x-17=0 | | log(x-1)-2*log(x+1)-log(8)=-2 | | x+2x+2=2 | | -3=57+(n+1)-4 | | -3m(m-10)=0 | | 5x-7=3(x+3) | | -3x=40000 | | 5x-11=2(x+14) | | 40-8x=32 | | -3a-16b-38a+24b= | | 5x-8/2=2x | | 2*6x-52=9x-196 | | x=42-10+4 | | s*4-39=9 | | 60x=0 | | 1*6x-52=9x-196 | | 10*6x-52=9x-196 | | 4x-34=14 |