Factor -28*r**2 + 37808*r - 199060.

-4(r - 1345)(7*r - 37)

Factor 2*u**2 - 394842*u - 3158864.

2(u - 197429)(u + 8)

Factor 8911*i3 - 1294*i2 - 7635*i + 18.

(i - 1)*(7i + 6)(1273*i - 3)

Determine k, given that -5*k3 + 14158*k2 - 191596*k - 78904 = 0.

-2⁄5, 14, 2818

Factor -2*d**2⁄13 + 6664*d/13 - 4068470⁄13.

-2(d - 2527)(d - 805)/13

Let -97756*z**2⁄7 - 195408*z/7 + 208⁄7 = 0. What is z?

-2, 26⁄24439

Factor -n3⁄3 - 673*n2 - 324048*n + 15975360.

-(n - 45)*(n + 1032)**2⁄3

Solve -4*l5⁄5 - 2712*l4⁄5 - 15248*l3 - 124584*l2 - 1608556*l/5 - 1059168⁄5 = 0.

-649, -17, -8, -3, -1

Find a such that -a5⁄6 + 31557*a4⁄2 - 1120206416*a3⁄3 - 1867910148*a2 + 35855884072*a/3 - 13445317464 = 0.

-9, 2, 47338

Factor -2*s3⁄3 + 387848*s2⁄3 + 775702*s/3 + 129284.

-2(s - 193926)(s + 1)**2⁄3