Answer:
Average rate of change:
Step-by-step explanation:
<u>Remember:</u>
The average rate of change of a function over an interval is
<u>Given:</u>
<u>Calculation:</u>
Therefore, the average rate of change of the function over the interval
is
.
Answer: 25x² - 64
<u>Step-by-step explanation:</u>
(5x + 8)(5x - 8)
= 5x(5x - 8) + 8(5x - 8)
= 25x² - 40x + 40x - 64
= 25x² + 0x - 64
=
NOTE: descending powers means the biggest exponent goes first, then the next biggest exponent, etc.
For example: x⁴ then x³ then x² then x then the number (which is actually x⁰)
