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x^5+x^2+8;x^2+2*x+7
4*x^2+2*x-6 >= 0;x
x
sin(5*x)
cos(3*x)
(cos(x))^2
| 3x+2.5=4 | | 3(2x-3)-2=3(x-2)+19 | | -7=5+w | | x+2y+3z=30 | | -3z-8z=7z+8+8z | | 3y-45=90 | | xe^(-x/2) | | 20-3v=2v | | 2x=1734 | | 2x+5y+7z=71 | | 6/12=x/100 | | 3x-7(7-x)=6 | | 2x=2094 | | 6x^2+-5x+1=0 | | 2x^4+5x^2=1 | | -x^2+26=3x^2-52 | | X/3-2/6=4/12 | | 385n+85=c | | (x+7)-(x+4)=30 | | r^6/r | | (x+3)-(x+4)=30 | | 2(x+7)=3(7-x) | | x-3x+8= | | (x-4)*(x+3)=20 | | (x-4)*(x+3)=93 | | 4x+y=894.7 | | t-16=0 | | -5(2t+1)=-35 | | 3(f-10)=-24 | | 64+4=44a | | 7q=133 | | 2(3s+3)=18 |