The teacher will be very surprised to see your correct solution 😉
___ /pi*(x + 10)\ -\/ 3 tan|-----------| = ------- \ 3 / 3
sum
-3/2
=
-3/2
product
-3/2
=
-3/2
-3/2
x1 = -43.5
x2 = 49.5
x3 = 25.5
x4 = -52.5
x5 = -25.5
x6 = -40.5
x7 = -28.5
x8 = 55.5
x9 = 22.5
x10 = 73.5
x11 = 52.5
x12 = 61.5
x13 = -67.5
x14 = 37.5
x15 = 16.5
x16 = 43.5
x17 = -91.5
x18 = -19.5
x19 = 10.5
x20 = 58.5
x21 = -34.5
x22 = -76.5
x23 = -37.5
x24 = 91.5
x25 = -82.5
x26 = 97.5
x27 = 13.5
x28 = -46.5
x29 = -16.5
x30 = -49.5
x31 = -70.5
x32 = 4.5
x33 = 34.5
x34 = -79.5
x35 = -22.5
x36 = -58.5
x37 = 85.5
x38 = -85.5
x39 = -61.5
x40 = -100.5
x41 = -55.5
x42 = -13.5
x43 = -88.5
x44 = 7.5
x45 = 94.5
x46 = 67.5
x47 = -1.5
x48 = 40.5
x49 = 28.5
x50 = -64.5
x51 = -4.5
x52 = -97.5
x53 = -73.5
x54 = 88.5
x55 = 76.5
x56 = 31.5
x57 = -10.5
x58 = 100.5
x59 = 64.5
x60 = 70.5
x61 = -31.5
x62 = 1.5
x63 = 79.5
x64 = -7.5
x65 = 19.5
x66 = 46.5
x67 = -94.5
x68 = 82.5
x68 = 82.5