The square of 3x times y times (- the cube of 2XY)

The square of 3x times y times (- the cube of 2XY)

3x*3x*y*(-2xy)*(-2xy)**(-2xy)
=72(xy)^4

If 1 + X + the square of X + the cube of x = 0, find the square of X + the cube of X + the fourth power of X + the fifth power of X + the sixth power of X + the seventh power of X + the eighth power of X

X + the square of X + the cube of X + the fourth power of X + the fifth power of X + the sixth power of X + the seventh power of X + the eighth power of X
=X (1 + X + square of X + cube of x) + 5th power of X (1 + X + square of X + cube of x)
=0+0
=0

What is the highest power coefficient of the cube of 2-x-1-3x + X?

If we neglect 2 on the denominator, there will be three single items. The first power of X is the highest term, and its coefficient is - 1