SOLVING WITH THESE VALUES:
x=2
y=3
——————————————————
The answer is 1,729 when x=2 and y=3
Work is in the pictures below :)
<em><u>Picture 1</u></em>: Solved where x=2 and y=3
<em><u>Picture 2</u></em>: Solved without plugging in values for x and y
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)