The teacher will be very surprised to see your correct solution 😉
/pi*(8*x + 3)\ sin|------------| = 1/2 \ 6 /
sum
1/4 + 5/4
=
3/2
product
1/4 * 5/4
=
5/16
x1 = 28.25
x2 = 42.25
x3 = 24.25
x4 = 85.75
x5 = 7.75
x6 = 0.25
x7 = 25.75
x8 = 82.25
x9 = -91.75
x10 = 37.75
x11 = 34.25
x12 = 54.25
x13 = -52.25
x14 = 18.25
x15 = 13.75
x16 = -29.75
x17 = -46.25
x18 = 78.25
x19 = -37.75
x20 = 67.75
x21 = 49.75
x22 = -35.75
x23 = 48.25
x24 = -23.75
x25 = 90.25
x26 = 64.25
x27 = -10.25
x28 = -67.75
x29 = -94.25
x30 = 10.25
x31 = -40.25
x32 = -58.25
x33 = 58.25
x34 = 72.25
x35 = -71.75
x36 = 60.25
x37 = -82.25
x38 = -28.25
x39 = 31.75
x40 = 1.75
x41 = -79.75
x42 = -97.75
x43 = -85.75
x44 = -22.25
x45 = 96.25
x46 = 12.25
x47 = -49.75
x48 = 46.25
x49 = -61.75
x50 = -65.75
x51 = -19.75
x52 = -64.25
x53 = -4.25
x54 = 84.25
x55 = -55.75
x56 = 43.75
x57 = -95.75
x58 = -34.25
x59 = -7.75
x60 = 61.75
x61 = -25.75
x62 = 52.25
x63 = -5.75
x64 = 19.75
x65 = -11.75
x66 = 55.75
x67 = -89.75
x68 = -1.75
x69 = -100.25
x70 = 88.25
x71 = -76.25
x72 = -43.75
x73 = 79.75
x74 = 16.25
x75 = -73.75
x76 = 6.25
x77 = 70.25
x78 = -83.75
x79 = -13.75
x80 = -16.25
x81 = 91.75
x82 = -17.75
x83 = 100.25
x84 = -41.75
x85 = -31.75
x86 = 76.25
x87 = 36.25
x88 = -59.75
x89 = -53.75
x90 = 66.25
x91 = 22.25
x92 = -47.75
x93 = 97.75
x94 = -70.25
x95 = 40.25
x96 = -77.75
x97 = 73.75
x98 = 94.25
x99 = -88.25
x100 = 4.25
x101 = 30.25
x101 = 30.25