Solve for x
x+x-6=0
OA.
-2, -3
ОВ.
-2.3
OC.
2.-3
OD.
2.3

(n^3 - n)

= n(n-1)(n+1)

since it is divisible by 3 and 2 ,because it is a multiple 3 consecutive number

if, n-1 is odd then n+1 is also odd, then it is a multiple of 9

but if, n-1 is even then n+1 is also even, then it is a multiple of 4

so, largest multiple = max(9*2, 4*3) = max(18, 12) = 18

the discriminant is 64 + 4*1*12 = 112

this is prime.

step-by-step explanation: