Yes........its an identity
Answer: I think the answer is 4x^2/(4x+3) (x-1)
The correct answer is actually 'B'. D does not name the ray because the way it is formatted, the line would go in the opposite direction it is facing currently and wouldn't be a ray. For D to be correct, it would have to be
--->
EC
The greatest common factor of two numbers is, as the name suggests, the greatest integer that divides both numbers.
You number are already factored in product of primes, so it is obvious that the first number 133 = 19x7 is divisible by 1, 7, 19 and 133.
The same goes for 15 = 3x5: it is divisible by 1, 3, 5 and 15.
As you can see, there is no non-trivial divisor which is common to both number, so the answer is 1
If you are correcting to a=7 to where 3a = 21 as their are 3 a's which is 7
