To simply the expression,we should remember an ! in math represents every number (til 1) before that one multiplied or "the product of the integers from 1 to n"
So now that we have the definitions we can simplify by finding the values of each:
(9x8x7x6x5x4x3x2x1)-(4x3x2x1)(5x4x3x2x1)
After simplifying this will equal to 3600
Your answer is going to be
(×+4) times (×+3)
Hope that helps you.
From 0 move to left two 1/3, them move to right four 1/3. The answer is 2/3
See the image
4,8,11,7 are the coefficients in this expression