In your notebook, set up the following addition using a vertical format and find the sum of the given polynomials. 3x 2 + 2x - 5 and -4 + 7x 2 a. -x2 + 9x - 9 b. 21x2 + 2x + 20 c. 10x2 - 5x - 1 d. 10x2 + 2x - 9

Option d -

Step-by-step explanation:

Given : Polynomials and

To find : The sum of the polynomials?

Solution :

Step 1 - Write the polynomials

and

Step 2 - Add both polynomials

Step 3 - Open the parenthesis

Step 4 - Add the like terms

Therefore, Option d is correct.

given that triangle abc is transformed two times to get triangle

a"b"c"

first abc is transformed in to a'b'c' as follows:

the coordinates of a are (1,-1) and transformed into a'(-1,1)

similarly b (4,-2) became b'(-4,2) and

c(7,-2) became c'(-7,2)

i.e. (x,y) becomes (-x,-y)

this is nothing but reflection about a point here origin.

thus first transformation is reflection on the origin.

next is exactly shifting 3 units down

source:

yes they are the same