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-((1440000*(9*x-80))/((9*x+80)^3)) > 0;x
x
351;258
(x+1)^2*e^-x
tan(x)
e^-x
| 6a-3a-4=47 | | 0.5x(x-82)=19+8x | | 11+4x=2(-x+2)-23 | | 30.7/r-100.6=0 | | 20sinx=16 | | 7-4n=2n+9 | | -5a+4+6a=8a-23 | | r^2+4r+7=14 | | 2400x(3/5)= | | 3*3+y=11 | | -8n-4=-2+n-6-5n | | 3*2+y=11 | | 4+7ln=3 | | 2x^2+102x+289=0 | | P(t)=55t-700 | | (x^3-9x)+(2x^2-18)=0 | | 2(3x-10)=4-2(x+12)+8x | | (k-8)(2k-12)=0 | | 5x(x^2+2x)=0 | | 7=16.38 | | (x^4)-(6x^2)+4=0 | | l-9zl=64 | | 28=7/3v | | 7x+6=9x+5 | | lx+2l=-8 | | 10(3k+10)=2(9k+11) | | -7x+1=343 | | 3y+8=53 | | -4y-8=7y+25 | | 16.3k+19.2+75k=64.1 | | 2a-6=o | | -10a-5=35 |