An 18 tip is left on an $84 dinner bill. Write 2 different expressions that can be used to determine the total paid for dinner

4.66666667

Step-by-step explanation:

(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

i found two solutions,   n = 2 • ± √3 = ± 3.4641

step-by-step explanation: