A
2 – b2 ≡ (a + b)(a – b)
a and b are positive whole numbers with a > b
a
2 – b2 is a prime number.
why are a and b consecutive numbers?

!! 10 ! a westbound jet leaves central airport traveling 635 miles per hour. at the same time, an eastbound plane departs at 325 miles per hour. in how many hours will the planes be 1900 miles apart?

Valentina is subtracting from . she finds the lcd to be 15y2. what is valentina's next step?

A50% increase followed by 33 1/2% decrease