You subtract polynomials by combining like terms first
Answer:

Step-by-step explanation:
Given
See attachment for matrix
From the attachment, we have the following vertices

When scaled by 3T, we have the following:






Hence, the vertices are:

Four million and thirty is represented numerically by:
4, 000, 030
Hope it helped,
Happy homework/ study/ exam!
Answer:
x = 2* pi* n
Step-by-step explanation:
cos(2x) cos(x) + sin(2x) sin x =1
We know cos(s) cos(t) + sin(s) sin(t) = cos(s - t)
Using s =2x and t = x
cos (2x-x) =1
cos (x) =1
We know this occurs at 0, 2pi, 4 pi etc
x = 2* pi* n where n is an integer