What is 7x2 - 4 + 6x3 - 4x - x4 in standard form? O
A 4 - 4x + 7x2 + 6x3 _ x4
B. 40-4- x) + x2(7 + 6x – x2)
C. A + 6x3 + 7x2 - 4x - 4
O
D
_x4 + 6x3 + 7x2 - 4x - 4

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

step-by-step explanation:

no of data

divide by no of mode