Question

Here are some examples:1. (5 – 9r5) +(-10 + 8r3)

Answer 1

Given the equation;

$(5-9r^5)+(-10+8r^3)$

we want to expand and simplify the expression.

$\begin{gathered} (5-9r^5)+(-10+8r^3) \\ 5-9r^5-10+8r^3 \\ \text{ collecting the like terms;} \\ -9r^5+8r^3-10+5 \\ -9r^5+8r^3-5 \end{gathered}$

So, expanding and simplifying the expression we have;

$-9r^5+8r^3-5$