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(1/(2*3.14*x))*(a^2-b^2)^(1/2)
3.14*(1/2)*x*(a^2-b^2)^(1/2)
(1/x)*(a^2-b^2)^(1/2)
1*x^3+12*x^2+39*x+28 = 0;x
x
862.4;2.8
| c(21-c)=110 | | 18x-15=-69 | | y=in(ax^2+b) | | -9b^2=-8a-4 | | 4-4x-x^2=0 | | 50=0.34*x | | t^2+4n-45= | | 8x-3x+2y=-21 | | 3x+4y+4=26 | | 60-6x=x | | G+7=19 | | 50x+520=40x | | 6t-6=14 | | 3(8.3)-4.1+4(x)= | | 50x+520=40 | | (28b-3)-9(3b+2)=-3 | | M+25=108 | | 2/4=n/5 | | 4x-(8/x^3) | | 22-4.1(x)= | | 3y=2/5 | | 7w/3=28 | | 3p^2-8p=60 | | 32x+6.5x+y=180 | | 9v(v)(v)=-45v(v) | | 50=0.24*x | | 6x-3x+4-2x=9x+4 | | 4x+(4x-6)=2 | | f(12)=(12*12)(-14*12)+49 | | Y=26.5t-4.5t^2 | | 6x-3x+4-2x=10x+2 | | 50=0.21*x |