Answer:
396
Step-by-step explanation:
Difference of two squares is breaking down numbers into pieces and using the distributive property to solve. The pieces should be in the form (a-b)(c+d).
Write 22 as (20 + 2) and 18 as (20-2).
(20+2)(20-2) = 400 + 40 - 40 - 4 = 400 - 4 = 396
Answer:
x = 180 - (31 + 40)
Step-by-step explanation:
x = 180 - (31 + 40)
You use cars for much longer than you use a tuxedo. A tuxedo is once-off, whereas cars you use for days and days and days... After a while, the <span>$</span>20 you pay per day is going to add up!
5x - 2 = 8x + 5.
-2 = -5x + 8x + 5
-2 = 3x +5
-7 = 3x
-7/3 = -2.3
