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30 = (2*12)/5
50 = (2*20)/5
14 = (2*35)/5
x^3-2*x^2-1;x^2-1
6*(sin(pi/8))^6*cos(pi/8)
| 30=12*2/5 | | 4/5=?/10 | | 50=20*2/5 | | -0.2k+1=11 | | 14=35*2/5 | | 4/3•3.14•512 | | y=(14,35)2/5 | | C=0.10(m-100)+15+20 | | 1.4+b= | | 13=5-48 | | -62+2x=-4x+94 | | 54+3.5x=8x | | x-4(.5x-4)=12 | | 4/7y-6=-2 | | -11x-83=x+97 | | 5x-112=122-8x | | -2/3m=-0.2k | | 8n+6=4n-15 | | -3+7x=38 | | 4(0.35)+7(0.3)+10(0.25)+2(0.10)= | | (30*9)=(13+x)13 | | 7(y+3)=5y | | 4(y+2)-16=3(6y-8) | | x/3=1-x/8 | | 4x(0.35)+7x(0.3)+10x(0.25)+2x(0.10)= | | x-2(x-1)=21 | | Y=-3/4x-5/2 | | 8x(x+1)(x-10)=0 | | 1+6-3x-8= | | 4/7y-8=-4 | | -3p+16=7 | | 22(15)+32(12)=704 |