Question 49
Algebraic ExpressionsSimplify: (x − 3y)2 − (x + 3y)2.
- A.2(x + 3y)
- B.2(x − 3y)
- C.−12xy
- D.6xy
Show the answer and explanation
Answer: C (−12xy)
Explanation
(x2 − 6xy + 9y2) − (x2 + 6xy + 9y2) = −12xy.
Simplify: (x − 3y)2 − (x + 3y)2.
Answer: C (−12xy)
(x2 − 6xy + 9y2) − (x2 + 6xy + 9y2) = −12xy.