Question

Help! I need to express the sum of terms of the form ax^r where r is a rational number. PROBLEM: (x^2+2)^2 / x^5

Answer 1

(x^2+2) is same as (x^2+2)(x^2+2)
multiply them
are you familiar with foil method ?

Answer 2

\[\rm (a+b)^2 =a^2+2ab+b^2\] you can use this equation to multiply or draw a box write one parentheses at the top and one at left side
then multiply each left term by top term