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(x^2-(5*x)+7)^(1/2)+2*x
(cos(x/2))^((-sin(x/2))^2)
(cos(x/2))^2
(x-2)/(x^2+x)+(2*x)/(x-1)
cos(x)+(1/2)*x
| 21=14n | | 5(3x-4)=19 | | (40x)+(8*1.5x)=510 | | B=95+33w | | 35a^2-42a+30a-36=0 | | 3x^2+3y^2-6y=0 | | 282-v=136 | | 9-2x=-x | | 10x-y=13 | | 115=-w+168 | | 2x+19-4x=12-(3+4x) | | -y+15=192 | | 3x^2-5x-k=0 | | 16-4(-2)(8)=64 | | 5x+3y+3=0 | | -26=-4X+18 | | -24=4w-8 | | (-4)2-4(-2)(8)=16-4(2)(8) | | h=-16t^2+15t+5 | | k=0.5(72)(16)+(324) | | 0=p^2-8p-14 | | 2.50h+10=4h+7 | | 18X-30=-210 | | 9=4+5w | | 3(w-2)=18 | | 3x-1-7x=-33 | | 2.50h+10=4h+10 | | C=to | | 0=p^2-7p-15 | | 7n^2=-24-29n | | 4-2(3x+1)=32 | | 5s-10(x+1)=-5x+18 |