Answer:
48 is the answer
Explanation provided in picture
The line in the middle has a right angle, so the angle just above the Y would be 90 degrees.
The angle to the right of y is given as 48.
The three inside angles of a triangle need to equal 180.
So y = 180 - 90 - 48 = 42 degrees.
Simplify the expression
-15x4y3+3x3y2
Hope this helps! :)
~Zain
ANSWER
The correct answer is D.
EXPLANATION
If we express the monomial,

as product of primes, we obtain:

If we express the monomial

as product of primes we obtain:

The least common multiple of these two binomials is the product of the highest powers of the common factors.
The LCM is


Therefore the correct answer is D.