what do you need to know?
Answer:
Step-by-step explanation:
1) c²+d² is not factorable
2) e²/25 - f²/36 = e²/5² - f²/6² = (e/5)² - (f/6)² = (e/5 + f/6) (e/5 - f/6)
3)
nothing can be done
Answer:
a. More than one pie
Step-by-step explanation:
2/3 + 3/4
8/12 + 9/12 = 17/12
17/12 = 1 5/12
Answer:
i think the answer is 72
Step-by-step explanation:
Answer:
the answer is 
Step-by-step explanation:
You have to find the common denominator in order to get the sum.
multiply 5 to
and you get 
then to double check the sum, subtract it.

hope this make sense :/