Could someone solve and explain this problem to me ?

3x^3(4x^3 - 3x + 6)

Step-by-step explanation:

factor 12x^6 - 9x^4 + 18x^3

= 12x^3x^3 - 9xx^3 + 18x^3

= 3*4x^3x^3 - 3*3xx^3 + 3*6x^3

= 3x^3(4x^3 - 3x + 6)

hello from mrbilldoesmath!

answer:

a(n) - a(n-1) -3

discussion:

this ones a bit interesting. given a(n) = 5 - 3n consider this:

a(n-1) = 5 - 3(n-1)

          = (5 - 3n) + 3             => but a(n) = 5 - 3n, the first term

          = a(n)   + 3                 => subtract 3 from both sides

a(n-1) -3 = a(n)  

or

a(n) - a(n-1) -3

you,

mrb

answer: the 4 kilogram bag

step-by-step explanation: this is because if you divide the number of kilograms into the total it will tell you how much each individual kilogram would be worth. 2 kilos is 7 and change 3 would be around 6 ish and the 4 kilo would be 4.6 and change and the 5 kilos would be like 4.88