Answer:
2
Step-by-step explanation:
Answer:
Step-by-step explanation:
Grace paid $4.80/(4 notebooks) = {$4.80/4)/notebook = $1.20 per notebook
Jim paid $3.90/(3 notebooks) = ($3.90/3)/notebook = $1.30 per notebook
Grace found the better buy.
Difference of two squares:
x² - y² = (x - y)(x + 8)
So for difference of squares that has (x -8) as one of the factor.
The other factor is (x + 8)
(x - 8)(x + 8) = x² - 8²
= x² - 64.
Answer:
8
Step-by-step explanation:
22-14=8
8+10=18
18+4=22
