Help to answer this question given a proper ration function 2x²-1 / (x+1)³

i) express 2x²-1 / (x+1)³ in form of partial fractions.

ii) hence, solve 2x²-1 / (x+1)³

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?

Which of the following is the shape of a cross section of the figure shown below

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?