Multiply w with every term in the second parenthesis: w³-2w²t+4wt² multiple 2t with every term in the second parenthesis: 2w²t-4wt²+8t³ add up the products: w³+8t³
The geometric sequence is a sequence in which the proceeding number is equal to the preceeding number multiplied by a ratio. The expression that represents this sequence is an = a1*r^(n-1) where r is the ratio and n is an integer. This type of formula is exponential
