x = 104
No. it's not a prime number when x = 40, 41, 81,82 ...
-12 +/- sq root 104
(x - 8)(x - 13)
88+16=104 you can solve by doing 104-88 to find x
x=5
x3 + 12x2 - 5x = x(x2 + 12x - 5) = x(x + 6 - √41)(x + 6 + √41)
For 104 they are: 104 = 1 x 104 104 = 2 x 52 104 = 4 x 26 104 = 8 x 13
26 + 26 + 26 + 26 = 4 x 26 = 104
41-3 to the third power plus 8 x 2.3 - 15 is 17.4.
40 + (40 x 0) + 1 = 41.
3x = 24, x = 8