question:
yolanda has finished 45% of the homework problems she was assigned. so far she has finished 27 problems.
a. write 45% as a rate per 100 and then reduce the fraction to lowest terms.
b. how many problems was yolanda assigned? justify your answer.
c. how many problems does yolanda still have to do? show your work.

(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: