Answer:
This is very easy
use your law of indices and find the LCM of those with minus and plus signs
Consider for a moment building a tree with all possible choices. The first row would contain 8 books (each possible choice for the first book). Then, the second row would contain 7 books for each book in the first row (the choices possible for the second book). Otherwise, it would be 8*7. Following this principal, we continue to multiply down to 1. 8*7*6*5*4*3*2*1. This is also known as 8!, a factorial.
Finally, 8! = 40,320
(m-1)²
= m² - 2×m×1 + 1²
= <u>m² - 2m + 1</u>
Use the identity - (a - b)² = a² - 2ab + b²
Hope it helps cha :)
Answer:
im pretty sure the answer is 60
Step-by-step explanation:
6 ten thousands is 60,000
60,000 divided by 1000 is 60
It is gonna be X= - 60/19
