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)
A common ratio for that sequence is r = 5/1
5. -6a-48
6. 36x+4
7. 30n+40
8. 1.8m+2
Yess
The answer is 32 cm. for the hexagon
Answer:
36 centimeters
Step-by-step explanation:
Since one side is 60 centimeters, just divide by 20 and get 3
Then multiply 12 by 3 and get 36
I hope this helps!