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ANTONII [103]
3 years ago
13

How do I do this????

Mathematics
1 answer:
photoshop1234 [79]3 years ago
7 0

Answer:

0

Step-by-step explanation:

Multiplying out the given expression, we get acx^2 - adxy + bcxy - bdy^2.  

Since ac = 18 and bd = 50, this expression becomes 18x^2 - (ad - bc)xy -50y^2.  But ad=bc, so this reduces to 18x^2 - 0 - 50y^2, or 18x^2 - 50y^2.  In other words, the coefficient of the xy term is 0.


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