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)
Answer:
y=-1
Step-by-step explanation:
yeah-ya...... right?
Answer:
x=y+4
Step-by-step explanation:
bc you add four bc it's the opposite
Answer:
211 × 9 is 1899 so rounding to nearest thousands would be 2000
Answer:
50% decrease
Step-by-step explanation:
I took the test