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2^x
(sin(x/4))^2-x
(cos(x/4))^2-x
(sin(x/4))^2-x
(-8*x)/(x^2+1)
| 3(b-13)=15 | | 5x(x+4)=6x | | (x-10)+(x-10)=180 | | 5x+3y=67.5 | | -2p+-15=3 | | -16x^2-20x-5=1 | | -18=7v+-10v | | 6/f=2 | | 5-2y-12=9y+15 | | 3/5-x=33 | | 3/5x=33 | | -3x^2+1.8x=0 | | (4+3y)x-5y=0 | | 12.65+15.8k=14.7k-4.07 | | 3y-7+y=9 | | 7k-9=32 | | (4+3y)-5y=0 | | 19r-20=20-11r+20 | | 6/5•y=12/5 | | 3x+8-12x=6+9x | | 8b+5=24 | | 5u+9-11u=-5u-5 | | 4/3•x=53 | | -17s=-16s-3 | | -9g-8=-8g | | 2x10^-5/28 | | (18h-27)-4=101 | | 5x^4+14x^2-3=0 | | -3+5u=-10+4u | | 2y^-2/4y^3 | | 18h-27-4=101 | | 12=b/7 |