The problem
Click to see the original problem
Hi,
I can't understand why (x+y)y-(x+y)x becomes (x+y)(y-x). Where does the minus go?
Answer provided by our tutors
We pull "(x + y)" in front of the brackets:
Hi,
I can't understand why (x+y)y-(x+y)x becomes (x+y)(y-x). Where does the minus go?
We pull "(x + y)" in front of the brackets:
| ← Previous Problem | Next Problem → |