Th answer is 3/4 I’m pretty sure
a^ - b^ a squared minus b squared.
use distributive property of multiplication. FOIL (first, outside, inside, last)
a *a = a^ - b*a= ab (or ba) + b*a = ba (or ab) - b*b= b^
a squared - ab +ab - b squared
Negative ab and positive ab = 0 therefore you are left with
a^ - b^
Multiply the exponent outside the () with every exponent inside the ()
Answer:
15 km/h
Step-by-step explanation:
To find the speed, divide the total number of kilometers by the total number of hours:
Find the total number of hours:
32 + 13
= 45
Divide this by 3:
45/3
= 15
So, the average speed was 15 km/h
