1) 3 - 7 x 5 + 2 x 4= 2) 7 - 2 x 5 + 9 x 3= 3) 2 - 8x + 3x when x = 5 4) 4 - 2x + 5x when x= 4 5) z divided 2 - 4z + 3(z-3) when z =8

(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

6.9

step-by-step explanation:

simple math really

6 1/2 times 0.6 = 3.9

but if you are just doing 6 and not 6 1/2 then the answer is 3.6