Which expression is equivalent to 27 + 15? A 3 × (9 + 15) B 3 × (9 + 5) C 9 × (3 + 15) D 9 × (3 + 5)

Your answer is b

Step-by-step explanation:

27 + 15= 42

a- 9+15= 24x3= 72

b- 9+5= 14x3= 42

c- 3+15= 18x9=162

d- 3+5= 8x9= 72

Hope this helps.

(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

answer: i think it's a

step-by-step explanation: