Answer:
Both, you and your friend, are correct.
Step-by-step explanation:
5 P 5 = 5!
A shortcut I learned is that in the permutation equation nPn when n is the same on both sides, it is equal to if you used factorial, n!.
Hope i understand it right
9y^2 -12y^4 = 3y^2 *(3 - 4y^2)
I would say A. becuase squares can be similar by looking alike but it doesn't matter what size, big or small.
For this case we must simplify the following expression:
We apply distributive property on the left side of the equation:
We subtract 3n from both sides of the equation:
We subtract 6 from both sides of the equation:
We divide between 45 on both sides of the equation:
Answer: